Garrett Lisi: The Surfer Physicist Who Found E8 Unification

Theories of Everything with Curt Jaimungal

Curt Jaimungal

Physics, Philosophy, Society & Culture, Science

4.6 • 606 Ratings

🗓️ 25 September 2024

⏱️ 107 minutes

🔗️ Recording | iTunes | RSS

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Summary

Garrett Lisi, a theoretical physicist and surfer, discusses his Exceptionally Simple Theory of Everything based on the E8 Lie group and its implications for fundamental forces and particles. The conversation also explores spinors, triality, and the challenges of unifying physics outside academia.- 00:00 - Intro- 01:24 - Garrett’s Ted Talk and Background- 08:36 - Mystery of Spinors- 10:13 - Garrett Poses a Physical Problem- 12:22 - String Theorists- 23:48 - Triality- 26:13 - Garrett’s Top Points in His Talk- 28:42 - “String Theory’s the Only Game in Town”- 32:10 - Garrett’s Presentation Begins: Unification- 38:22 - Spinors vs. Fermions- 45:56 - More Particles in Higher Gauge Groups- 48:42 - Threefold Symmetry- 54:00- - Group Theory Overview- 59:37 - Quaternion Group- 01:04:14 - Pin Group- 01:10:25 - Spin Eigenvalues- 01:14:45 - C, P, and T- 01:22:12 - Biquaternionic Spinors- 01:25:55 - Quaternion Triality and the CPTt Group- 01:34:14 - Multi-Generational Fermion States- 01:37:20 - Fermions in Exceptional Unification- 01:42:12 - Exceptional Magic Square- 01:44:22 - Outro / Support TOESPONSORS:- I personally subscribe to The Economist. TOE listeners get 35% off the annual subscription. No other podcast has this! https://economist.com/TOE- Indeed: boost job visibility at https://indeed.com/theories ($75 credit)- HelloFresh: free breakfast for life at https://www.HelloFresh.com/freetheoriesofeverything- Planet Wild: first month free with code EVERYTHING9 at https://planetwild.com/r/theoriesofeverything/joinRESOURCES:- Garrett Lisi’s TED talk on his theory of everything: https://www.youtube.com/watch?v=y-Gk_Ddhr0M- Garrett Lisi’s website: https://li.si/- Garrett Lisi’s papers: https://li.si/Physics/CV.html- Peter Woit on TOE: https://www.youtube.com/watch?v=9z3JYb_g2Qs- Garrett Lisi’s paper on triality: https://arxiv.org/pdf/2407.02497- Support TOE on Patreon: https://patreon.com/curtjaimungal (early access to ad-free audio episodes!)- Listen to TOE on Spotify: https://open.spotify.com/show/4gL14b92xAErofYQA7bU4e- Become a YouTube Member Here: https://www.youtube.com/channel/UCdWIQh9DGG6uhJk8eyIFl1w/join- Join TOE's Newsletter 'TOEmail' at https://www.curtjaimungal.org- 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- Subreddit r/TheoriesOfEverything: https://reddit.com/r/theoriesofeverything 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 megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	To my utter shock and amazement and just my whole brain just was electrified,
0:06.0	this whole algebraic structure that I had been playing with fits inside this largest simple,
0:10.0	exceptional E-algebra, E8, complete with this triality symmetry relating the generations.
0:20.0	Most physicists believe that the key to unification lies in simplicity and overlooked symmetry.
0:26.7	Theoretical physicist Garrett Lisey, known for his unabashedly, bullient E8 model that took
0:32.5	Ted by Storm 16 years ago, has groundbreaking new work on something called Triality, a three-fold symmetry
0:40.1	that could explain one of the most perplexing mysteries in particle physics that many don't talk
0:45.4	about. Why do the fundamental particles come in three generations? Interestingly, triality
0:52.5	isn't unique to Lisi's work.
0:55.1	The special orthogonal group, S.O.8, also exhibits a remarkable triality, relating its
1:00.5	vector and spinner representations. In this episode, we explore the geometry of E8 and the bizarre
1:07.6	world of bichlorneons. We'll also discuss why Lise's work, despite its rigor,
1:14.6	faces skepticism from the mainstream physics community
1:17.8	and how it challenges our understanding of the relationship
1:21.1	between mathematics and physical reality.
1:24.7	Garrett, Lacey, it's a long time coming.
1:27.1	Thank you for coming on to the podcast. Thanks for having me on it's a long time coming. Thank you for coming onto the podcast.
1:29.0	Thanks for having me on, Kurt.
1:31.0	Many know you from your TED Talk,
1:33.0	unveiling to the public the theory of everything based on E8.
1:36.6	So please tell us about that to set the stage for your latest research,
1:40.8	which we're about to get into.
	...

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