Philip Mannheim: No Big Bang. No Inflation. No Dark Matter.

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This podcast is about dark matter — and Professor Philip Mannheim thinks it isn't missing at all, just hiding in plain sight as the rest of the visible universe. In his first-ever podcast, on ideas he's pursued since 1972, Mannheim lays out conformal gravity: a theory built on Weyl symmetry rather than Einstein's equations, which explains galaxy rotation curves without dark matter, tames the cosmological constant, and fits the accelerating universe without fine-tuning. With longtime collaborator Carl Bender, he also resolves gravity's infamous "ghost" problem using PT symmetry instead of Hermiticity — suggesting the graviton may not even exist as a particle. I hope you enjoy.

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TIMESTAMPS:

- 00:00:00 - Einstein's Relativity Foundations

- 00:05:47 - Riemann Tensor and Curvature

- 00:11:50 - Flaws in Einstein's Equations

- 00:17:23 - Quantum Gravity Renormalizability

- 00:23:28 - Conformal Symmetry Principles

- 00:30:09 - Dynamical Mass Generation

- 00:37:08 - Inflation and Horizon Problems

- 00:43:55 - Renormalization Group Fixed Points

- 00:51:05 - Composite Higgs Solution

- 00:57:03 - Weyl Tensor Action

- 01:03:44 - Solving Dark Matter

- 01:09:36 - Cosmic Coincidence Problem

- 01:16:27 - Hubble Tension and Redshift

- 01:24:31 - PT Symmetry and Ghosts

- 01:31:21 - Probability Conservation vs. Hermiticity

- 01:38:13 - CPT Theorem and Fermions

- 01:45:14 - Quantum Decays and Resonances

- 01:51:05 - Parity and Right-Handed Neutrinos

- 01:56:14 - Gravitons and Wavefunction Collapse

- 02:02:24 - Cyclic Universes and Singularities

- 02:08:24 - String Theory Fine-Tuning

- 02:14:45 - Unitarity and Poincaré Stresses

- 02:21:02 - Gravitational Lensing and Tenure

- 02:26:55 - Nature and Experimental Data

LINKS MENTIONED:

- Philip's Papers: inspirehep.net/authors/998943

- Newton's Law Of Gravity: en.wikipedia.org/wiki/Newton%27s_law_of_univer…

- Geodesics: en.wikipedia.org/wiki/Geodesics_in_general_rel…

- Equivalence Principle: en.wikipedia.org/wiki/Equivalence_principle

- Introduction To General Relativity [Book]: amazon.com/dp/0070004234?tag=toe08-20

- Foundation Of The General Theory Of Relativity [Paper]: isidore.co/misc/Physics%20papers%20and%20books…).pdf

- Dynamical Symmetry Breaking As A Bootstrap [Paper]: journals.aps.org/prd/abstract/10.1103/PhysRevD…

- Dynamics Of The Universe And Spontaneous Symmetry Breaking [Paper]: ui.adsabs.harvard.edu/abs/1980ApJ...241L..59K/…

- Mass Generation, The Cosmological Constant Problem, Conformal Symmetry, And The Higgs Boson [Paper]: arxiv.org/abs/1610.08907

- Living Without Supersymmetry [Paper]: arxiv.org/abs/1506.01399

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