186 min listen
Abhay Ashtekar on Gödel Universes, Buddha's Poison Arrow, Time Travel, and Loop Quantum Cosmology
Abhay Ashtekar on Gödel Universes, Buddha's Poison Arrow, Time Travel, and Loop Quantum Cosmology
ratings:
Length:
221 minutes
Released:
Aug 1, 2022
Format:
Podcast episode
Description
YouTube link: https://youtu.be/03ReIvXKrrU
Sponsor: Brilliant: https://brilliant.org/TOE for 20% off
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
LINKS MENTIONED:
- 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
TIMESTAMPS:
00:00:00 Introduction
00:00:00 Inner World (conscious experience) vs. Outer World (physics)
00:05:35 Buddha's Parable of the Poison Arrow
00:11:05 Philosophy and Physics should be merged
00:13:33 No one wants to say that the Buddha was wrong
00:19:30 Scientifically studying "enlightenment"
00:23:29 When to stop taking psychedelics ("when you get the call, hang up!")
00:25:17 What is Loop Quantum Gravity?
00:36:39 Wheeler DeWitt equation
00:44:48 Self Dual and Anti Self Dual
00:48:16 Hodge Dual and the Metric
00:52:06 Linearized Gravity
00:55:32 Quantum Gravity
01:03:22 Einstein vs. Schrödinger (the behind the scenes scuffle)
01:09:24 Technical details of quantizing geometry
01:13:41 What is Yang Mills theory?
01:20:52 Tetrads and Vierbeins
01:24:26 Roger Penrose's approach to quantum gravity (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 (the "Ashtekar Bounce")
02:23:07 Pure and Mixed Quantum Mechanical States
02:26:38 Black Holes and Event Horizons
02:42:09 ADM Decomposition
02:43:55 The Gödel Universe, Time Travel, and Closed Timelike Curves
02:52:38 Salvatore Pais asks about the Superforce
02:56:13 The universe before the Big Bang
03:01:44 String Theory vs. Loop Quantum Gravity
03:17:31 Ed Witten disses Loop Quantum Gravity and Ashtekar responds
03:21:14 Duality between String theory and LQG?
03:25:20 The Philosopher and the Monk
* * *
Just wrapped (April 2021) a documentary called Better Left Unsaid http://betterleftunsaidfilm.com on the topic of "when does the left go too far?" Visit that site if you'd like to watch it.
Learn more about your ad choices. Visit megaphone.fm/adchoices
Sponsor: Brilliant: https://brilliant.org/TOE for 20% off
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
LINKS MENTIONED:
- 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
TIMESTAMPS:
00:00:00 Introduction
00:00:00 Inner World (conscious experience) vs. Outer World (physics)
00:05:35 Buddha's Parable of the Poison Arrow
00:11:05 Philosophy and Physics should be merged
00:13:33 No one wants to say that the Buddha was wrong
00:19:30 Scientifically studying "enlightenment"
00:23:29 When to stop taking psychedelics ("when you get the call, hang up!")
00:25:17 What is Loop Quantum Gravity?
00:36:39 Wheeler DeWitt equation
00:44:48 Self Dual and Anti Self Dual
00:48:16 Hodge Dual and the Metric
00:52:06 Linearized Gravity
00:55:32 Quantum Gravity
01:03:22 Einstein vs. Schrödinger (the behind the scenes scuffle)
01:09:24 Technical details of quantizing geometry
01:13:41 What is Yang Mills theory?
01:20:52 Tetrads and Vierbeins
01:24:26 Roger Penrose's approach to quantum gravity (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 (the "Ashtekar Bounce")
02:23:07 Pure and Mixed Quantum Mechanical States
02:26:38 Black Holes and Event Horizons
02:42:09 ADM Decomposition
02:43:55 The Gödel Universe, Time Travel, and Closed Timelike Curves
02:52:38 Salvatore Pais asks about the Superforce
02:56:13 The universe before the Big Bang
03:01:44 String Theory vs. Loop Quantum Gravity
03:17:31 Ed Witten disses Loop Quantum Gravity and Ashtekar responds
03:21:14 Duality between String theory and LQG?
03:25:20 The Philosopher and the Monk
* * *
Just wrapped (April 2021) a documentary called Better Left Unsaid http://betterleftunsaidfilm.com on the topic of "when does the left go too far?" Visit that site if you'd like to watch it.
Learn more about your ad choices. Visit megaphone.fm/adchoices
Released:
Aug 1, 2022
Format:
Podcast episode
Titles in the series (100)
Donald Hoffman on the fundamental nature of consciousness (the most technical interview published with him): Donald Hoffman a cognitive psychologist and Professor in the Department of Cognitive Sciences at the University of California, Irvine. The interviewer is Curt Jaimungal, who has a background in mathematical physics, making this an eminently scholarly and... by Theories of Everything with Curt Jaimungal