Episode Details
Back to Episodes
Abhay Ashtekar on Gödel Universes, Buddha's Poison Arrow, Time Travel, and Loop Quantum Cosmology
Episode 103
Published 3 years, 7 months ago
Description
In this episode Curt Jaimungal talks with loop quantum gravity pioneer Abhay Ashtekar about Gödel universes, time travel, the Buddha’s poison‑arrow parable, and the latest ideas in loop quantum cosmology. They explore how consciousness, philosophy and physics intersect and debate the prospects of a quantum bounce replacing the Big Bang.
- 00:00:00 - Introduction
- 00:00:00 - Inner World vs Outer World
- 00:05:35 - Buddha's Poison Arrow
- 00:11:05 - Merging philosophy and physics
- 00:13:33 - Buddha not wrong
- 00:19:30 - Studying enlightenment scientifically
- 00:23:29 - Psychedelics caution
- 00:25:17 - Loop Quantum Gravity overview
- 00:36:39 - Wheeler‑DeWitt equation
- 00:44:48 - Self‑dual and anti‑self‑dual
- 00:48:16 - Hodge dual and metric
- 00:52:06 - Linearized gravity
- 00:55:32 - Quantum gravity
- 01:03:22 - Einstein vs Schrödinger
- 01:09:24 - Quantizing geometry details
- 01:13:41 - Yang‑Mills theory intro
- 01:20:52 - Tetrads and vierbeins
- 01:24:26 - Penrose’s twistor theory
- 01:26:44 - Einstein’s hole argument
- 01:40:48 - Mach’s principle
- 01:49:04 - Singularities and black holes
- 02:12:18 - Quantum bounce (Ashtekar bounce)
- 02:23:07 - Pure and mixed quantum states
- 02:26:38 - Black holes and horizons
- 02:42:09 - ADM decomposition
- 02:43:55 - Gödel universe, time travel, CTCs
- 02:52:38 - Superforce question
- 02:56:13 - Universe before the Big Bang
- 03:01:44 - String theory vs LQG
- 03:17:31 - Ed Witten critiques LQG
- 03:21:14 - Duality between string theory and LQG
- 03:25:20 - Philosopher and monk discussion
SPONSORS:
- Brilliant: 20% off at https://brilliant.org/TOE
- NordVPN: exclusive deal at https://nordvpn.com/theories
- Manscaped: 20% off and free shipping with code [EVERYTHING20]
- Wren: climate pledge at https://wren.co/theories
- Trade Coffee: $30 off first order plus free shipping at https://drinktrade.com/everything
- ButcherBox: two steaks and lobster claw free at https://butcherbox.com/THEORIES
RESOURCES:
- YouTube link: https://youtu.be/03ReIvXKrrU
- Patreon: https://patreon.com/curtjaimungal
- Crypto: https://tinyurl.com/cryptoTOE
- PayPal: https://tinyurl.com/paypalTOE
- Twitter: https://twitter.com/TOEwithCurt
- Discord Invite: https://discord.com/invite/kBcnfNVwqs
- iTunes: https://podcasts.apple.com/ca/podcast/better-left-unsaid-with-curt-jaimungal/id1521758802
- Pandora: https://pdora.co/33b9lfP
- Spotify: https://open.spotify.com/show/4gL14b92xAErofYQA7bU4e
- Subreddit r/TheoriesOfEverything: https://reddit.com/r/theoriesofeverything
- Merch: https://tinyurl.com/TOEmerch
- Physics and Consciousness Contest: https://youtu.be/V93GQaDtv8w
- Dialect's video on Newton's Bucket: https://www.youtube.com/watch?v=Jz3mOlUOGoY
- Brian Roberts (physicist and philosopher): https://personal.lse.ac.uk/robert49/
- The Monk and the Philosopher: https://amzn.to/3Bva2mf
- More on the Gödel Universe: https://doi.org/10.1088/1367-2630/15/1/013063
- Better Left Unsaid documentary: http://betterleftunsaidfilm.com
- 00:00:00 - Introduction
- 00:00:00 - Inner World vs Outer World
- 00:05:35 - Buddha's Poison Arrow
- 00:11:05 - Merging philosophy and physics
- 00:13:33 - Buddha not wrong
- 00:19:30 - Studying enlightenment scientifically
- 00:23:29 - Psychedelics caution
- 00:25:17 - Loop Quantum Gravity overview
- 00:36:39 - Wheeler‑DeWitt equation
- 00:44:48 - Self‑dual and anti‑self‑dual
- 00:48:16 - Hodge dual and metric
- 00:52:06 - Linearized gravity
- 00:55:32 - Quantum gravity
- 01:03:22 - Einstein vs Schrödinger
- 01:09:24 - Quantizing geometry details
- 01:13:41 - Yang‑Mills theory intro
- 01:20:52 - Tetrads and vierbeins
- 01:24:26 - Penrose’s twistor theory
- 01:26:44 - Einstein’s hole argument
- 01:40:48 - Mach’s principle
- 01:49:04 - Singularities and black holes
- 02:12:18 - Quantum bounce (Ashtekar bounce)
- 02:23:07 - Pure and mixed quantum states
- 02:26:38 - Black holes and horizons
- 02:42:09 - ADM decomposition
- 02:43:55 - Gödel universe, time travel, CTCs
- 02:52:38 - Superforce question
- 02:56:13 - Universe before the Big Bang
- 03:01:44 - String theory vs LQG
- 03:17:31 - Ed Witten critiques LQG
- 03:21:14 - Duality between string theory and LQG
- 03:25:20 - Philosopher and monk discussion
SPONSORS:
- Brilliant: 20% off at https://brilliant.org/TOE
- NordVPN: exclusive deal at https://nordvpn.com/theories
- Manscaped: 20% off and free shipping with code [EVERYTHING20]
- Wren: climate pledge at https://wren.co/theories
- Trade Coffee: $30 off first order plus free shipping at https://drinktrade.com/everything
- ButcherBox: two steaks and lobster claw free at https://butcherbox.com/THEORIES
RESOURCES:
- YouTube link: https://youtu.be/03ReIvXKrrU
- Patreon: https://patreon.com/curtjaimungal
- Crypto: https://tinyurl.com/cryptoTOE
- PayPal: https://tinyurl.com/paypalTOE
- Twitter: https://twitter.com/TOEwithCurt
- Discord Invite: https://discord.com/invite/kBcnfNVwqs
- iTunes: https://podcasts.apple.com/ca/podcast/better-left-unsaid-with-curt-jaimungal/id1521758802
- Pandora: https://pdora.co/33b9lfP
- Spotify: https://open.spotify.com/show/4gL14b92xAErofYQA7bU4e
- Subreddit r/TheoriesOfEverything: https://reddit.com/r/theoriesofeverything
- Merch: https://tinyurl.com/TOEmerch
- Physics and Consciousness Contest: https://youtu.be/V93GQaDtv8w
- Dialect's video on Newton's Bucket: https://www.youtube.com/watch?v=Jz3mOlUOGoY
- Brian Roberts (physicist and philosopher): https://personal.lse.ac.uk/robert49/
- The Monk and the Philosopher: https://amzn.to/3Bva2mf
- More on the Gödel Universe: https://doi.org/10.1088/1367-2630/15/1/013063
- Better Left Unsaid documentary: http://betterleftunsaidfilm.com
Theories of Everything with Curt Jaimungal features long-form, technically detailed interviews with leading researchers in physics, mathematics, consciousness, and philosophy, exploring topics at the level of active research. For academics, graduate students, and anyone seeking depth beyond popular science.
FOLLOW: Substack | Spotify | YouTube | Twitter
Learn more about your ad choices. Visit megaphone.fm/adchoices
Learn more about your ad choices. Visit mega