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Phymaths podcast
Hassaan Saleem
22 episodes
5 days ago
A podcast to discuss the ideas that are at the forefront of fundamental theoretical physics and mathematics.
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Physics
Science
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All content for Phymaths podcast is the property of Hassaan Saleem and is served directly from their servers with no modification, redirects, or rehosting. The podcast is not affiliated with or endorsed by Podjoint in any way.
A podcast to discuss the ideas that are at the forefront of fundamental theoretical physics and mathematics.
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Physics
Science
Episodes (20/22)
Phymaths podcast
Phymaths podcast # 57 || Dr. Manki Kim

DescriptionDr. Manki Kim is a theoretical physicist, working on String Perturbation, String Compactifications, and String Field Theory. The list of his publications can be found below.Some links1) Dr. Kim's works: https://inspirehep.net/authors/14230212) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/Contact InfoMy website: hassaansaleem.comFollow on Instagram: https://www.instagram.com/hassaan.3142/Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1XFollow on Twitter: https://twitter.com/Hassaan_PHYEmail Queries: greatestmight@gmail.comTime stamps(0:00) Coming Up(1:33) Intro of the guest(1:51) His current projects(3:33) Changing cosmological constant(7:51) His interest in physics(15:53) His work on small cosmological constants(37:15) The second step of KKLT(40:58) Scale separation(44:29) Why string field theory isn't used a lot?(50:03) What is string field theory (SFT)?(55:24) Calabi Yau metric and Machine Learning(1:01:07) Non-perturbation definition of string theory(1:06:34) Collaborations in Ph.D.(1:10:53) Choosing a problem to work on(1:13:10) CV of failure(1:18:24) (People's question) Feeling stuck(1:20:16) (People's question) Dark matter candidates(1:22:13) (People's question) Advisor or university?(1:25:49) (People's question) SFT and String perturbation(1:27:14) (People's question) KKLT and Vafa's criticism(1:38:17) (People's question) Doing string theory in 2025

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1 week ago
1 hour 41 minutes 53 seconds

Phymaths podcast
Phymaths podcast # 56 || Dr. Daniel Grimmer

DescriptionDr. Daniel Grimmer is a philosopher of Physics at the University of Bonn, working on the intersection of Physics & Philosophy, and the metaphysics of space and time. A list of his works can be found below.Some links1) Dr. Grimmer's works: https://inspirehep.net/authors/1896269?ui-citation-summary=true2) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/Contact InfoMy website: hassaansaleem.comFollow on Instagram: https://www.instagram.com/hassaan.3142/Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1XFollow on Twitter: https://twitter.com/Hassaan_PHYEmail Queries: greatestmight@gmail.comTime stamps(0:00) Coming Up(0:54) Intro of the guest(1:07) His current projects(2:11) His Physics Ph.D. work(5:01) Local measurements and machine learning(7:50) Spacetime as a lattice(15:02) Deflaing spacetime (Dynamics vs. Geometry)(22:02) Topological redescription(24:58) Studying spacetime dualities(27:46) ISE method(36:44) Sine Gordon/Thirring example(41:30) Non-geometric backgrounds(46:22) Neo-Kantian spacetime(51:00) Spacetime fundamental?(54:54) Nature of time(57:50) Mach's principle(59:30) David Lewis and laws of nature(1:10:44) Causation(1:15:00) Physics to philosophy transition(1:24:40) (People's question) Universe and maths(1:26:51) (People's question) Why is there something?(1:29:06) (People's question) Spacetime & entanglement

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1 week ago
1 hour 34 minutes 9 seconds

Phymaths podcast
Phymaths podcast # 55 || Dr. Pedro Vieira

Description

Dr. Pedro Vieira is a theoretical physicist, working on integrability, holography and matrix models (worked on bootstrap techniques in the past). A list of his works can be found below.Some links

1) Dr. Vieira's works: https://inspirehep.net/authors/1027784?ui-citation-summary=true2) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/Contact Info

My website: hassaansaleem.comFollow on Instagram: https://www.instagram.com/hassaan.3142/Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1XFollow on Twitter: https://twitter.com/Hassaan_PHYEmail Queries: greatestmight@gmail.comTime stamps

(0:00) Coming up(1:09) Intro of the guest(1:24) His current projects(12:58) His interest in Physics(14:54) Classical Integrability(23:37) Quantum Integrability(29:40) Finding charges(31:17) Integrability in holography(41:48) Bethe ansatz(47:48) Story of the plot in his 2009 work(53:08) Quantum spectral curve(58:57) Matrix models(1:11:42) Matrix models and hydrodynamics(1:18:50) Bootstrap and its aims(1:23:00) Coordinates on the space of QFTs(1:26:50) Metric on the space of CFTs(1:31:46) Space of QFTs connected?(1:34:00) Metric on QFT space is unique?(1:36:48) Taking a Ph.D. student(1:39:13) (People's question) Bootstrap(1:43:28) (People's question) Research atmosphere(1:46:08) (People's question) Non-integer colors(1:53:00) (People's question) Planar diagram(1:56:50) (People's question) Building collaborations

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1 month ago
2 hours 2 minutes 32 seconds

Phymaths podcast
Phymaths podcast # 54 || Guest: Dr. Miguel Montero

DescriptionDr. Miguel Montero is a theoretical physicist at IFT Madrid, working on string compactifications and the swampland program. The list of his works can be found below.Some links1) Dr. Montero's list of works: https://inspirehep.net/authors/1272182?ui-citation-summary=true2) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/Contact InfoYouTube channel: https://www.youtube.com/@phymaths

My website: hassaansaleem.comJoin the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1XFollow on Twitter: https://twitter.com/Hassaan_PHYEmail Queries: greatestmight@gmail.comTime stamps(0:00) Coming Up(1:10) Intro of the guest(1:22) His current projects(4:28) What is the Swampland program?(11:24) Swampland conjectures vs string constructions(12:45) DGKT vs Weak Gravity Conjecture (WGC)(23:20) Discovering R7 branes(30:02) Relationships between swampland conjectures(33:30) Emergent string conjecture(34:35) Distance conjecture and EFT breakdown(37:39) Metric used for distance conjecture(39:11) Swampland prediction for N=4 SU(N) SYM(42:46) Tom Banks' paper on string parameters(46:15) What is the dark dimension?(51:02) Similarity with Nima et al's idea?(55:03) Why achieving SUSY scale separation is hard?(59:22) Non SUSY scale separation(1:03:52) Scale separated CFTs(1:08:15) His interest in Physics(1:10:44) The book that got him interested(1:11:24) Importance of hardwork(1:20:05) How to choose problems to work on?(1:29:09) Good PhD advisor(1:31:00) Which PhD students to take?(1:35:22) Setting deadlines(1:38:02) (People's question) Surprising swampland conjecture?(1:40:40) (People's question) Favorite restaurant in Madrid

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2 months ago
1 hour 43 minutes 42 seconds

Phymaths podcast
Phymaths podcast # 53 || Guest: Dr. Ivano Basile

Description

Dr. Ivano Basile is a theoretical physicist at the Max Planck institute for Physics at Garching, working on Non-supersymmetric string theories, supersymmetry breaking and recently, breaking of global symmetries. The list of his works can be found below.


Some links

1) Dr. Basile's list of works: https://inspirehep.net/authors/1677616?ui-citation-summary=true

2) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/


Contact Info

My website: hassaansaleem.com

Follow on Instagram: https://www.instagram.com/hassaan.3142/

Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1X

Follow on Twitter: https://twitter.com/Hassaan_PHY

Email Queries: greatestmight@gmail.com


Time stamps

(00:00) Coming up

(00:24) Intro of the guest

(00:42) His current projects

(02:49) His interest and journey in Physics

(10:51) What is String Theory?

(18:05) Recent Tom Banks paper

(21:24) Important questions in string phenomenology

(26:37) Scale separation in string theory

(33:16) Non-supersymmetric strings

(45:04) Intrinsically quantum vacuua

(48:35) Dualities for non SUSY strings

(53:42) D-Branes in non SUSY string theories

(1:01:46) deSitter spacetime and higher corrections

(1:07:07) Using functional RG flows

(1:10:54) Quintessence in non SUSY strings

(1:14:20) Brane world scenario for non SUSY strings

(1:28:28) String Field Theories for non SUSY strings

(1:30:06) Dealing with research metrics

(1:39:30) No. of papers (some interesting examples)

(1:40:49) Dealing with research metrics (continued)

(1:42:50) Qualities of a good research advisor

(1:48:16) Birds vs Frogs (Freeman Dyson)

(1:50:36) Transitioning froma student to a researcher

(1:56:54) (People's questions) Back up plan

(1:59:14) (People's questions) More non SUSY strings?

(2:00:29) (People's questions) Asymptotic safety

(2:04:20) Vafa Strominger scenario for non SUSY strings

(2:05:40) (People's questions) -1 form symmetries


#physics #theoreticalphysics #stringtheory #symmetryreflection #scicomm #podcast

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3 months ago
2 hours 7 minutes 46 seconds

Phymaths podcast
Phymaths podcast # 52 || Guest: Dr. Rajesh Gopakumar

Description Dr. Rajesh Gopakumar is a theoretical physicist, who has majorly worked on holographic duality in his career. He got his Ph.D. from Princeton University under the supervision of David Gross and right now, he is the director of ICTS Bangalore in India. The list of his works is available below. Some links 1) Dr. Gopakumar's list of works: https://inspirehep.net/authors/1007959 2) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1X Follow on Twitter: https://twitter.com/Hassaan_PHY Email Queries: greatestmight@gmail.com Time stamps (0:00) Coming Up (0:31) Intro of the guest (0:48) His recent projects (8:53) Multiple open string descriptions (11:21) His interest in Physics (15:10) Pressure to go to engineering (16:12) IIT Kanpur (20:11) His skepticism for string theory (25:08) What is string theory? (31:01) Is spacetime fundamental? (34:28) Overview of holography (36:38) Maldacena's example (37:26) Using holography for QCD (43:10) His work on holography (50:51) Higher spins and Weinberg Witten theorem (57:40) His work on Chern Simons theory (1:01:35) Being the director of ICTS (1:10:30) Choosing a Ph.D. student (1:13:14) Publishing trends (1:15:40) (People's question) Physics and AI (1:19:45) (People's question) Phenomenology (1:21:26) (People's question) deSitter spaces (1:22:43) (People's question) Masters in ICTS (1:25:12) (People's question) Ashoke Sen (1:27:12) (People's question) Research Transition (1:29:42) (People's question) Comparisons (1:32:02) (People's question) Failure

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6 months ago
1 hour 36 minutes 49 seconds

Phymaths podcast
Phymaths podcast # 51 || Guest: Dr. Daniel Whiteson

Description Dr. Daniel Whiteson is an experimental high-energy physicist at UC Irvine and works in the ATLAS collaboration. He is also a science communicator, who made the Daytime Emmy nominated series Elinor Wonders Why, and he also hosts a podcast named Daniel and Kelly’s Extraordinary Universe. The link of this podcast and his works are given below. Some links 1) His podcast: https://podcasts.apple.com/us/podcast/daniel-and-kellys-extraordinary-universe/id1436616330 2) His works: https://inspirehep.net/authors/1020448 3) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1X Follow on Twitter: https://twitter.com/Hassaan_PHY Email Queries: greatestmight@gmail.com Time stamps (0:00) Coming Up (0:33) Intro of guest (0:58) His interest in Physics (5:24) His active projects (7:46) Single event discoveries (12:04) Hiding the data from other collaborations (14:26) Credit sharing in big collaborations (20:34) Being an independent researcher (27:26) Media coverage of LHC and Higgs discovery (32:46) The 5σ benchmark for discovery (41:23) Machine Learning for Particle Physics (45:58) Working with Phenomenologists (47:44) Theorists/Experimentalists' relation (53:27) Phenomenological models (56:14) His preference for phenomenology research (58:37) The politics of getting funding (1:05:44) Challenges of making a children's TV series (1:16:29) Science communication through podcasts (1:18:36) Effects of having a podcast on me (1:21:37) PhD comics (1:22:02) His most favourite guests (1:25:33) If he could invite Issac Asimov (1:27:56) Using humor in science communication (1:30:30) How to engage science skeptics (1:34:45) The APS story and crackpots (1:38:40) Balancing time (research & scicomm) (1:42:11) Selecting a Ph.D student (1:43:47) Dealing with failure & rejection (1:49:01) (People's question) LHC upgrades (1:50:30) (People's question) Collider on the Moon (1:52:38) (People's question) "We have no idea" title (1:53:53) (People's question) Investing in research

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6 months ago
1 hour 56 minutes 41 seconds

Phymaths podcast
Phymaths podcast # 50 || Guest: Dr. Nabil Iqbal

Description Dr. Nabil Iqbal is a theoretical physicist at Durham University. He works on holography, generalized symmetries, and condensed matter physics among other things. A list of his works can be found in the link below. Some links 1) Dr. Iqbal's works: https://inspirehep.net/authors/1051240 2) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1X Follow on Twitter: https://twitter.com/Hassaan_PHY Email Queries: greatestmight@gmail.com Time stamps (0:00) Coming Up (0:37) Guest's intro (0:59) Inspiration for Physics (5:00) Holography overview (9:02) Maldacena's example of holography (15:13) Using holography for QCD (20:15) Truncating AdS spacetime (23:38) Chiral symmetry breaking (25:00) Non-Fermi liquids (30:54) Strange metals (33:16) Holography and Non-Fermi liquids (35:43) Holography and higher spin gravity (40:00) Evading Weinberg-Witten theorem (42:58) Generalized symmetries (Overview) (49:28) Applications of generalized symmetries (52:56) Kramers-Wannier duality (57:44) Symmetries as topological operators (1:00:47) Machine learning rediscovers duality (1:07:11) Sine Gordon/ Thirring duality (1:11:24) Which architecture to use? (1:16:21) How to see AI physics discoveries? (1:20:38) Tackling physics misinformation (1:26:40) The "Lying for Grants" lie (1:31:25) How to take Ph.D. students? (1:33:21) Lack of motivation (1:35:00) Getting back from failed projects (1:38:07) (People's question) Strings & 3D Ising model (1:40:58) People's questions (Rapid fire) (1:47:32) US vs UK Ph.D. system (1:49:11) Advice for undergrad, master & Ph.D students (1:51:23) Dealing with Imposter syndrome

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6 months ago
1 hour 55 minutes 5 seconds

Phymaths podcast
Phymaths podcast # 49 || Guest: Dr. Zohar Komargodski

Description Dr. Zohar Komargodski is a theoretical physicist at the Simon Center for Geometry and Physics and he works on RG flows, generalized symmetries, and condensed matter physics among other things. A list of his works can be found in the link below.

Some links 1) Dr. Komargodski's works: https://inspirehep.net/authors/1021214 2) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1X Follow on Twitter: https://twitter.com/Hassaan_PHY Email Queries: greatestmight@gmail.com Time stamps (0:00) Coming Up (0:43) Guest's intro (1:08) His interest in physics (2:52) His interest in high-energy physics (4:17) Overview of RG flows (8:03) Relation with effective field theories (13:36) Extra terms in Maxwell equations (15:00) What does a theory 'flowing' mean? (18:22) Fixed points in RG flows (CFTs) (20:48) What a CFT can flow to? (21:12) c-theorem (28:55) a-theorem (30:58) Similar theorems in higher dimensions (32:25) Symmetries preserved under RG flows (36:21) How to define an anomaly? (38:52) What is a 'thooft anomaly? (44:47) Is ABJ anomaly an anomaly? (47:28) Unsolved problems regarding RG flows (49:52) Holographic methods for RG flows (51:22) Overview of generalized symmetries (58:04) Applications (His paper on monopoles) (1:04:50) Applications (Pion decay and Yang-Mills) (1:08:16) Prospects of generalized symmetries (1:10:06) Which ideas to take seriously? (1:13:22) Phrase "Theory of Everything" is misleading? (1:19:00) Comments on LQG and quantizing gravity (1:35:17) MOND (Philosophy and comments) (1:46:28) Geometric Unity (Philosophy and comments) (1:53:58) SU(5) theory (1:55:57) Tackling science misinformation (2:00:01) The "Lying for grants" lie (2:05:10) Mistakes in papers (2:07:57) Tackling misinformation (continued) (2:10:57) Misinformation, funding and progress (2:15:38) Mathematical consistency (2:21:21) Size of string theory community (2:25:09) High energy Physics job market (2:29:18) Misconceptions about the number of papers (2:34:51) How to interpret letters from unknown academics? (2:38:48) How to take Ph.D. students? (2:42:39) Advice for younger researchers? (2:43:37) How to be motivated with slow progress? (2:46:47) (People's question) Symmetry breaking (2:48:42) (People's question) Cosmology (2:50:11) (People's question) Recommendation letter (2:51:16) (People's question) Food places in NYC (2:52:48) Ending Corrections: (1:44:21) NGC 1277 appears to have a "deficit of dark matter" but the acceleration that was probed in the 2023 study was not sufficiently small to probe the MOND regime. So, this study doesn't rule MOND out right away. (2:43:51) He is actually talking about the book "What I Talk About When I Talk About Running" by H. Murakami

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7 months ago
2 hours 53 minutes 7 seconds

Phymaths podcast
Phymaths podcast # 48 || Guest: Dr. Raghu Mahajan

Description Dr. Raghu Mahajan is a theoretical physicist at ICTS Bangalore, working on the problems regarding instantons. He has previously worked on the Island's approach to Black Holes. A list of his works can be found in the link below. Some links 1) Dr. Mahajan's works: https://inspirehep.net/authors/1229066 2) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1X Follow on Twitter: https://twitter.com/Hassaan_PHY Email Queries: greatestmight@gmail.com Time stamps (0:00:00) Coming Up (0:00:26) Intro of guest (0:00:54) Time at IIT and interest in Physics (0:04:30) His interest in String Theory (0:08:20) Interest in the Islands approach (0:10:09) Massive Gravitons in Islands? (0:15:43) His opinion on the Fuzzball program (0:18:44) State of string theory (0:21:46) Important Areas in String Theory (0:24:30) Pure Spinor Formalism (0:25:18) String Field Theory's community (0:29:04) deSitter spacetime in String Theory (0:33:24) Third superstring revolution? (0:35:30) Spacetime isn't fundamental (0:38:25) Nonsupersymmetric situations (0:40:47) Swampland program (0:43:54) His work on Instantons in 2D (0:55:00) Job Market in String Theory (1:06:02) (People's question) Intuition vs Calculations (1:08:03) (People's question) AI and Theoretical Physics (1:11:49) (People's question) Computers in research (1:13:04) (People's question) Physics pathway in India (1:14:48) (People's question) String Theory Criticism (1:18:47) (People's question) String Theory is the end? (1:19:31) (People's question) Taking Ph.D. students (1:20:01) (People's question) Advice for young scientists

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7 months ago
1 hour 24 minutes 11 seconds

Phymaths podcast
Phymaths podcast # 47 || Guest: Dr. Harold Erbin

Dr. Harold Erbin is a theoretical physicist who works on string field theory and string compactifications. He uses AI to solve problems in theoretical physics and is the author of the most recent book on string field theory. A list of his works can be found below. Some links 1) Dr. Erbin's works: https://inspirehep.net/authors/1273902?ui-citation-summary=true 2) Support this channel: https://www.patreon.com/phymaths 3) Become a YouTube member: https://www.youtube.com/channel/UC3nAENP4F5GKrGk9BLNFLvw/join 4) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1X Follow on Twitter: https://twitter.com/Hassaan_PHY Email Queries: greatestmight@gmail.com Time stamps (0:00) Coming Up (0:25) Introduction of the guest (0:46) What is String Field Theory (SFT)? Why use it? (4:05) Functional fields in SFT (6:24) Mathematical Techniques for SFT (9:27) BRST and BV action (13:12) Background independence of string theory (29:39) Using pure spinor formalism (36:10) Using machine learning for SFT (50:38) Geometric BV algebras (57:03) Training the neural network (1:14:31) Constraints on closed SFT vertices (1:18:43) QFT - Neural Network correspondence (1:28:22) UV limit for Neural Network? (1:31:37) Experience with Ashoke Sen (1:44:40) His book on SFT (1:58:22) (People's question) Is string theory the end of Physics? (2:01:14) (People's question) Learning complex manifolds (2:03:31) (People's question) Learning machine learning early

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10 months ago
2 hours 11 minutes 4 seconds

Phymaths podcast
Phymaths podcast # 46 || Dr. David Wallace

Dr. David Wallace is a philosopher of science and a physicist, with doctorates in physics and philosophy. He works on the foundations of physics, and he is a proponent of the many worlds interpretation of quantum mechanics. His list of works can be found below. In this podcast episode, we discuss the "philosophy of physics" lens to look at different topics in physics. Some links 1) Dr. Wallace's list of works: https://inspirehep.net/authors/984235?ui-citation-summary=true 2) Support this channel: https://www.patreon.com/phymaths 3) Become our YouTube member: https://www.youtube.com/channel/UC3nAENP4F5GKrGk9BLNFLvw/join 4) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1X Follow on Twitter: https://twitter.com/Hassaan_PHY Email Queries: greatestmight@gmail.com Time stamps (0:00) Coming Up (0:29) Introduction of the guest (1:04) Real patterns in physics (10:00) Interpretation vs precisification (16:48) Are ghost fields real? (23:02) Emergence of time (25:24) Difficulties in doing interdisciplinary work (32:20) Should you do a philosophy PhD? (34:50) Did the 2022 Nobel Prize change anything? (37:20) Quantum mechanics isn't underdetermined (43:15) Dynamics-first vs geometry-first (46:25) Born rule in many worlds interpretation (1:01:25) Consciousness in a branching universe (1:06:38) Quantum Gravity (1:10:10) Does gravity need to be quantized? (1:16:00) (People's question) Interpreting path integrals (1:18:10) (People's question) Philosophical input in physics (1:23:47) Earlier physicists reading philosophy (1:26:03) (People's question) Generalizing a measurement (1:27:30) (People's question) Detecting many worlds? (1:31:25) (People's question) Renormalization

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10 months ago
1 hour 35 minutes 34 seconds

Phymaths podcast
Phymaths podcast # 45 || Dr. Fernando Quevedo

Dr. Fernando Quevedo is a theoretical physicist at the University of Cambridge's Department of Applied Mathematics and Theoretical Physics (DAMTP). He works on string theory and cosmology. He was the director of the International Center of Theoretical Physics (ICTP) from 2009 to 2019. We discuss his recent work and his experience as the director of ICTP. See the list of his works at the link below. Some links 1) Dr. Quevedo's works: https://inspirehep.net/authors/992530 2) Support this channel: https://www.patreon.com/phymaths 3) Become a YouTube member: https://www.youtube.com/channel/UC3nAENP4F5GKrGk9BLNFLvw/join 4) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1X Follow on Twitter: https://twitter.com/Hassaan_PHY Email Queries: greatestmight@gmail.com Time stamps (0:00) Coming Up (0:21) Introduction of the guest (0:54) Weinberg as supervisor (4:14) Weinberg theory group in the 80s (7:05) Different styles of doing physics (10:03) History of the deSitter problem (23:19) His recent paper on the deSitter problem (36:57) DESI results (39:28) Anthropic reasoning (46:51) Thoughts on the Dark dimension scenario (55:59) Experience as the ICTP director (1:00:20) Gathering funding for ICTP programs (1:04:00) Canceling Elsevier subscription for ICTP (1:05:33) ICTP during the pandemic (1:08:04) (People's question) Explaining 4 dimensions (1:14:02) (People's question) Standard Model notes (1:14:41) (People's question) Bad and Good String Theory Criticism (1:22:11) (People's question) Advice to undergrads (1:26:20) (People's question) His favorite course (1:27:12) (People's question) Experience with Jackson electrodynamics (1:29:25) (People's question) Taking graduate students (1:32:10) (People's question) Cosmology and particle physicists (1:41:14) (People's question) Writing a book on supersymmetry (1:46:10) Doing all the steps vs. leaving to the reader (1:48:22) Goodbye

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10 months ago
1 hour 48 minutes 40 seconds

Phymaths podcast
Phymaths podcast # 44 || Dr. Suvrat Raju

Dr. Suvrat Raju is a theoretical physicist at ICTS, Bangalore. He mainly works on black hole information and AdS/CFT (bulk/boundary correspondence). He is a proponent of the "holography of information" proposal, which says that information about black holes is always available outside. His list of works can be found at the link below. Some links 1) Dr. Raju's works: https://inspirehep.net/authors/1053745 2) Support this channel: https://www.patreon.com/phymaths 3) Become our YouTube channel member: https://www.youtube.com/channel/UC3nAENP4F5GKrGk9BLNFLvw/join 4) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Join the Whatsapp channel: https://whatsapp.com/channel/0029Va9DkjmAzNbs7IlGuv1X Follow on Twitter: https://twitter.com/Hassaan_PHY Email Queries: greatestmight@gmail.com Time stamps (0:00) Coming Up (0:11) Intro (0:26) Introduction of the guest (0:51) His active projects (3:42) Experience with Shiraz Minwalla (4:39) Transition to working on black holes (5:41) Holography of information: What took so long? (9:10) Contradiction with Mathur's theorem? (12:50) Correspondence with Samir Mathur (13:56) Split property failure (14:24) Double copy (16:00) Islands approach (20:20) Problems with large AdS black holes (24:14) State-dependent observables (24:58) Problems with the Fuzzball program (30:26) Interpreting the horizonless solutions (32:24) (People's question) String theory criticism (37:24) (People's question) Maths for Physics (38:08) (People's question) Work ethic (39:57) (People's question) Doing activism (42:41) (People's question) Hobbies (43:09) (People's question) Reading Phenomenology (43:56) (People's question) Working with Kyriakos Papadodimas (45:00) (People's question) ICTS/TIFR culture (47:20) (People's question) Talent vs Hardwork (49:16) (People's question) HRI experience (52:44) (People's question) Pi from string theory (54:54) Goodbye

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10 months ago
55 minutes 14 seconds

Phymaths podcast
Phymaths podcast # 43 || Dr. Jay Cummings

Dr. Jay Cummings is an assistant professor of mathematics at California State University, Sacramento. He is the last student of Ron Graham and the author of the LongformMath series, which includes two books on Real Analysis and Proofs. A list of his publications and the link to his books can be found below. Some links 1) Jay Cummings' website: https://longformmath.com/ 2) Real Analysis book link: https://www.amazon.com/Real-Analysis-Long-Form-Mathematics-Textbook/dp/1077254547 3) Proofs book link: https://www.amazon.com/Proofs-Long-Form-Mathematics-Textbook-Math/dp/B08T8JCVF1 4) List of his publications: https://scholar.google.com/citations?user=jFz_5p0AAAAJ&hl=en 5) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Patreon: https://www.patreon.com/phymaths Follow on Instagram: https://www.instagram.com/hassaan.3142/ Follow on Twitter: https://twitter.com/Hassaan_PHY Time stamps (0:00) Coming Up (0:35) Intro (0:50) Introduction of the guest (1:28) Ron Graham as an advisor (6:32) Solving problems in Ph.D. (8:24) Learning new areas (11:00) Probabilistic method (13:07) Why the name "Long Form Math"? (15:59) Motivation behind definitions (17:47) Including memes in textbooks (21:13) Did he have to skip something? (24:38) Any favorite proofs book? (25:48) Complex and functional analysis books? (26:37) Aspects of writing a textbook (34:32) His upcoming book (History of Maths) (46:52) Becoming a top mathematician is getting difficult (50:26) Favourite unsolved problems (57:26) Favourite unsolved problem in graph theory (1:01:59) Base-dependent theorems (1:09:08) Popularizing mathematics (1:17:26) Papers Inspired by Tweets (1:26:00) People's questions (1:44:30) His book is coming in December (probably)

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10 months ago
1 hour 49 minutes 11 seconds

Phymaths podcast
Phymaths podcast # 42 || Dr. Joseph Conlon

Dr. Joseph Conlon is a theoretical physicist at the University of Oxford. He works on string compactifications, string cosmology, string phenomenology, and related areas. He also wrote the book, "Why string theory?". The list of his works can be found at the following link. Some links 1) Support on Patreon: https://www.patreon.com/phymaths 2) Dr. Conlon's works: https://inspirehep.net/authors/1024860 3) "Why String Theory" book: https://www.amazon.com/Why-String-Theory-Joseph-Conlon/dp/1482242478 4) His second book: https://www.amazon.com/Origins-Cosmos-Verse-Joseph-Conlon/dp/0861549112?ref_=ast_author_dp 5) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Follow on Twitter: https://twitter.com/Hassaan_PHY

Time stamps (0:00) Coming Up (0:43) Intro (0:58) Introduction of the guest (1:43) Why two undergrads (3:16) His interest in physics (4:40) His thoughts on DESI (7:41) Getting deSitter in string theory (10:19) Moduli stabilization (Equivalence principle) (12:38) deSitter being an excited state (13:39) AdS being the true vacuum (14:33) deSitter swampland conjecture (15:52) Non-supersymmetric approaches (17:04) Holographic moduli stabilization (19:36) M theory compactifications and G2 manifolds (21:13) Strings and bouncing cosmologies (23:04) That famous page and perception of string theory (26:23) What led to writing that book? (27:36) Countering the misinformation about strings (31:28) Criticisms of string theory (37:36) His upcoming book (39:16) Managing time (40:19) Making complex ideas simple (42:21) Availability of his upcoming book (43:13) (People's question) String and real world (45:54) (People's question) Betting on cosmic strings (47:24) (People's question) Tilt towards formal theory (50:14) Third superstring revolution? (52:53) (People's question) Inflation and strings (54:00) (People's question) Developments to keep track of (57:53) Goodbye

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10 months ago
58 minutes 13 seconds

Phymaths podcast
Phymaths podcast # 41 || Dr. Samir Mathur

Dr. Samir Mathur is a well-known theoretical physicist at Ohio State University. He has worked for a long time on the information paradox and he is known for (among other things) his fuzzball proposal. The list of his works can be found below. Some links 1) Samir Mathur's works: https://inspirehep.net/authors/998393 2) His famous "small corrections theorem" paper: https://arxiv.org/abs/0909.1038 3) His review on fuzzballs: https://arxiv.org/abs/0810.4525 3) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Follow on Twitter: https://twitter.com/Hassaan_PHY Facebook Page: https://www.facebook.com/phymaths3142 Email Queries: greatestmight@gmail.com Time stamps (0:00) Coming Up (0:33) Intro (0:48) Introduction of the guest (1:16) His active projects (6:27) His thoughts on DESI results (7:58) Small corrections theorem: What took so long? (12:58) His email exchange with Ed Witten (15:46) GR community and string theory (18:00) Fuzzball: The motivation (29:10) Phase transition (horizon to no horizon) (30:28) Black hole vs fuzzball complementarity (45:09) Suvrat Raju's paper on split property (49:53) Effective small corrections theorem (52:46) Using AdS/CFT and Islands for black holes (1:04:50) His counterexample for 2D gravity (1:08:24) Changing the Island at every step? (1:15:33) Page curve in fuzzball paradigm (1:17:00) Why subadditivity isn't internalized? (1:24:40) What if horizon comes up in string theory? (1:26:16) Problems in high energy physics community (1:36:21) (People's question) Suvrat's holography proposal (1:41:32) (People's question) His work with Mukhi and Sen (1:44:43) (People's question) New predictions of fuzzball? (1:47:40) (People's question) Fuzzball on white holes (1:49:08) (People's question) Quantizing D Branes (1:50:38) Learning String Field Theory (1:54:33) (People's question) Accepting new Ph.D. students (2:00:58) Dealing with confusion as a researcher (2:08:30) Good Bye

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10 months ago
2 hours 9 minutes 6 seconds

Phymaths podcast
Phymaths podcast # 40 || Dr. John Donoghue

Dr. John Donoghue is a theoretical physicist at the University of Massachusetts, Amherst. He is well known for his work on effective field theories of gravity. He has also co-authored two books (links given below). Some links 1) Dynamics of the standard model: https://www.amazon.com/Dynamics-Standard-Cambridge-Monographs-Cosmology/dp/0521476526 2) A prelude to Quantum Field Theory: https://www.amazon.com/Prelude-Quantum-Field-Theory/dp/0691223483 3) List of Dr. Donoghue's works: https://inspirehep.net/authors/1011544 4) Link to the high energy physics resources page on my website: https://hassaansaleem.com/graduate-level-theoretical-physics-resources-in-progress/ Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Follow on Twitter: https://twitter.com/Hassaan_PHY Time stamps (0:00) Coming Up (0:20) Intro (0:36) Introduction of the guest (0:56) His 'prelude to QFT' book (6:06) What made him do the 1994 calculation? (10:34) Influence of the 'thooft-Veltman paper (14:15) Using the (+ - - -) metric (15:55) His work on avoiding singularity and its inconclusiveness (20:09) Is the BGV theorem valid in modified gravity? (21:46) Why people are still working on asymptotic safety? (27:49) Is the fixed point a CFT? (29:01) Won't the field theory description break down? (31:12) (People's question) Using machine learning in QFT (33:16) (People's question) Measuring the corrections to Einstein's equation (38:17) (People's question) Why quantize gravity? (42:28) (People's question) Gravity without spacetime (43:36) (People's question) Tackling hard problems in Ph.D. (49:31) (People's question) How to select Ph.D. students? (52:31) (People's question) What problems he wants solved? (55:26) (People's question) Using holography for EFTs (56:45) (People's question) Nonuniversality of lightcones (59:23) (People's question) Probing black holes using EFTs (1:01:37) Goodbye

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10 months ago
1 hour 2 minutes 2 seconds

Phymaths podcast
Phymaths podcast # 39 || Dr. Antonio Padilla

Dr. Antonio Padilla is a cosmologist at the University of Nottingham, working on the problems of cosmology, black holes, modified gravity, and string theory. He is well known for his videos on Numberphile and sixty symbols (links given below). He authored the book, "Fantastic Numbers and Where to Find Them" (link below). Some links 1) His book: https://www.amazon.com/Fantastic-Numbers-Where-Find-Them/dp/0374600562 2) His videos on Numberphile: https://youtube.com/playlist?list=PLt5AfwLFPxWL8KAJKO3WfHhJcWrJfjgfU&si=klpd8E9cNC8Nvb5M 3) His videos on sixty symbols: https://youtube.com/playlist?list=PLcUY9vudNKBPJmX64Jay51cdZTKMz4ACs&si=70ng6G21LrWdGS9n Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Follow on Twitter: https://twitter.com/Hassaan_PHY Time stamps (0:00) Coming Up (0:20) Intro (0:36) Introduction of the guest (1:11) His interest in cosmology (2:50) His interest in numbers (3:10) His book (Fantastic Numbers and Where to Find Them) (4:10) His interest in numbers (continued) (7:37) Procedure to make a numberphile video (10:41) His most favorite video ever (11:50) Shortest papers ever (13:27) Lessons from doing popular science (16:09) Countering misinformation on string theory (26:59) Academic jobs for young people (27:55) Shamit Kachru leaving the field (31:54) Does string theory have de Sitter spacetime? (38:33) His views on DESI results (43:00) His views on anthropic reasoning (46:20) Modified gravity and MOND (51:20) Undergrads in the Publications race (55:00) A breakthrough in maths required? (56:51) Grad school with bad grades (58:36) His work on integration techniques (1:03:07) Two titles for his book (1:04:05) Goodbye

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10 months ago
1 hour 4 minutes 15 seconds

Phymaths podcast
Phymaths podcast # 38 || Dr. Cliff Burgess

Dr. Cliff Burgess is a theoretical physicist at McMaster University and Perimeter Institute. He works on string theory, quantum gravity, cosmology, dark matter, and occasionally condensed matter physics. He did his Ph.D. from UT Austin, Texas, in 1985 under the supervision of Dr. Steven Weinberg. The list of his works can be seen below. Some links 1) Dr. Burgess' Twitter profile: https://twitter.com/cburgescliff 2) Dr. Burgess' list of works: https://inspirehep.net/authors/1014953?ui-citation-summary=true

Contact Info My website: hassaansaleem.com Follow on Instagram: https://www.instagram.com/hassaan.3142/ Follow on Twitter: https://twitter.com/Hassaan_PHY Time stamps (0:00) Coming Up (0:16) Intro (0:34) Introduction of the guest (1:30) Weinberg as an advisor (6:15) No papers with Weinberg (8:06) Weinberg's notation and conventions (12:03) How he chose his Ph.D. topic (14:42) What you don't know and what nobody knows (19:15) Enthusiasm for Effective Field Theory (EFT) (23:31) John Donoghue's work (25:50) Getting deSitter in string theory (31:53) On modifying gravity (36:09) Inflation models (43:36) His work on quantum Hall effect (51:38) His experience of writing textbooks (56:17) Favorite interpretation of quantum mechanics? (58:04) People's questions (1:08:50) His reaction to the accelerating universe (1:14:22) People's questions (continued)

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10 months ago
1 hour 18 minutes 41 seconds

Phymaths podcast
A podcast to discuss the ideas that are at the forefront of fundamental theoretical physics and mathematics.