Felix Finster: How Dirac's 90-Year-Old Error Unifies All of Physics
2 tim 12 min•29 juli 2025
Felix Finster proposes causal fermion systems unify physics by building spacetime from quantum correlations. The conversation covers the Dirac sea, emergence of geometry, the Born rule, and implications for quantum gravity and cosmology.
0:00 Introduction
3:12 The Origins of Causal Fermion Systems
6:55 Engaging with Alternative Theories in Physics
15:22 The Standard View of Causation
18:21 Classical, Quantum, and Pre-Quantum
23:06 How Spacetime Emerges from Disconnected Points
29:49 Recovering Lorentz Signature Without Assumptions
31:48 Recovering the Born Rule from First Principles
39:39 The Measurement Problem
46:20 Bounds on CSL Parameters
49:45 The Dynamics of Spacetime
57:47 Collaboration with Yao and Reflections on the Theory
1:03:13 A Quantum Gravity Theory Without Supersymmetry
1:05:28 The Dirac Sea
1:11:40 Addressing Infinite Energy in Semi-Classical Gravity
1:13:09 Octonions in the Vacuum Structure
1:17:32 Chirality and the Action Principle
1:20:33 Baryogenesis and Why Matter Exists
1:35:10 Rethinking the Strong CP and Hierarchy Problems
1:38:43 Recognition, Collaboration, and Growing Attention
1:54:00 Mathematical Criteria vs. Experimental Tests
2:01:02 Advice for Young Researchers
RESOURCES:
- Felix's Papers: https://scholar.google.com/citations?user=F7ppNroAAAAJ
- Felix's Bio: https://www.uni-regensburg.de/mathematik/mathematik-1/startseite/index.html
- Causal Fermion Systems [Paper]: https://arxiv.org/pdf/2405.19254
- Linear Dynamics of Wave Functions [Paper]: https://arxiv.org/pdf/2101.08673
- The Principle of the Fermionic Projector [Book]: https://www.amazon.com/Principle-Fermionic-Projector-Advanced-Mathematics/dp/0821839748
- Baryogensis for Causal Fermion Systems [Paper]: https://arxiv.org/pdf/2111.05556
- Holographic Mixing [Paper]: https://arxiv.org/pdf/2410.18045
- Standard Model Physics from an Algebra? [Paper]: https://arxiv.org/pdf/1611.09182
- Barry Loewer & Eddy Chen [TOE]: https://youtu.be/xZnafO__IZ0
- Fay Dowker [TOE]: https://youtu.be/PgYHEPCLVas
- String Theory Iceberg [TOE]: https://youtu.be/X4PdPnQuwjY
- David Kaiser [TOE]: https://youtu.be/_yebLXsIdwo
- Ruth Kastner [TOE]: https://youtu.be/-BsHh3_vCMQ
- Amanda Gefter [TOE]: https://youtu.be/yABPvDJ6Zgs
- Jacob Barandes [TOE]: https://youtu.be/7oWip00iXbo
- Eva Miranda [TOE]: https://youtu.be/6XyMepn-AZo
- Emily Adlam [TOE]: https://youtu.be/6I2OhmVWLMs
- Scott Aaronson & Jacob Barandes [TOE]: https://youtu.be/5rbC3XZr9-c
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0:00 Introduction
3:12 The Origins of Causal Fermion Systems
6:55 Engaging with Alternative Theories in Physics
15:22 The Standard View of Causation
18:21 Classical, Quantum, and Pre-Quantum
23:06 How Spacetime Emerges from Disconnected Points
29:49 Recovering Lorentz Signature Without Assumptions
31:48 Recovering the Born Rule from First Principles
39:39 The Measurement Problem
46:20 Bounds on CSL Parameters
49:45 The Dynamics of Spacetime
57:47 Collaboration with Yao and Reflections on the Theory
1:03:13 A Quantum Gravity Theory Without Supersymmetry
1:05:28 The Dirac Sea
1:11:40 Addressing Infinite Energy in Semi-Classical Gravity
1:13:09 Octonions in the Vacuum Structure
1:17:32 Chirality and the Action Principle
1:20:33 Baryogenesis and Why Matter Exists
1:35:10 Rethinking the Strong CP and Hierarchy Problems
1:38:43 Recognition, Collaboration, and Growing Attention
1:54:00 Mathematical Criteria vs. Experimental Tests
2:01:02 Advice for Young Researchers
RESOURCES:
- Felix's Papers: https://scholar.google.com/citations?user=F7ppNroAAAAJ
- Felix's Bio: https://www.uni-regensburg.de/mathematik/mathematik-1/startseite/index.html
- Causal Fermion Systems [Paper]: https://arxiv.org/pdf/2405.19254
- Linear Dynamics of Wave Functions [Paper]: https://arxiv.org/pdf/2101.08673
- The Principle of the Fermionic Projector [Book]: https://www.amazon.com/Principle-Fermionic-Projector-Advanced-Mathematics/dp/0821839748
- Baryogensis for Causal Fermion Systems [Paper]: https://arxiv.org/pdf/2111.05556
- Holographic Mixing [Paper]: https://arxiv.org/pdf/2410.18045
- Standard Model Physics from an Algebra? [Paper]: https://arxiv.org/pdf/1611.09182
- Barry Loewer & Eddy Chen [TOE]: https://youtu.be/xZnafO__IZ0
- Fay Dowker [TOE]: https://youtu.be/PgYHEPCLVas
- String Theory Iceberg [TOE]: https://youtu.be/X4PdPnQuwjY
- David Kaiser [TOE]: https://youtu.be/_yebLXsIdwo
- Ruth Kastner [TOE]: https://youtu.be/-BsHh3_vCMQ
- Amanda Gefter [TOE]: https://youtu.be/yABPvDJ6Zgs
- Jacob Barandes [TOE]: https://youtu.be/7oWip00iXbo
- Eva Miranda [TOE]: https://youtu.be/6XyMepn-AZo
- Emily Adlam [TOE]: https://youtu.be/6I2OhmVWLMs
- Scott Aaronson & Jacob Barandes [TOE]: https://youtu.be/5rbC3XZr9-c
- The Economist discount: I personally subscribe to The Economist. TOE listeners get 35% off the annual subscription. No other podcast has this! https://economist.com/TOE
- Join My New Substack (Personal Writings): https://curtjaimungal.substack.com
- Listen on Spotify: https://open.spotify.com/show/4gL14b92xAErofYQA7bU4e
- Become a YouTube Member (Early Access Videos): https://www.youtube.com/channel/UCdWIQh9DGG6uhJk8eyIFl1w/join
- Support on Patreon: https://patreon.com/curtjaimungal
- Support on Crypto: https://commerce.coinbase.com/checkout/de803625-87d3-4300-ab6d-85d4258834a9
- Support on PayPal: https://www.paypal.com/donate?hosted_button_id=XUBHNMFXUX5S4
- Twitter: https://twitter.com/TOEwithCurt
- Discord Invite: https://discord.com/invite/kBcnfNVwqs
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.
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