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Physics Frontiers

Physics Frontiers

by Jim Rantschler★ 4.9(2.4k Reviews)

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Bimetric Gravity
Ep 2382331Nov 24, 2019
46 min
Bimetric Gravity

Randy introduces Jim to Sabine Hossenfelder's bimetric theory of gravity. In this gravitational theory, there are two types of matter whose only interaction is through gravitation...

Wigner's Friend
Ep 2382332Sep 21, 2019
44 min
Wigner's Friend

Randy and Jim discuss experiments that purport to show that there is no such thing as objective reality.Show Notes: http://frontiers.physicsfm.com/46...

Loop Quantum Gravity
Ep 2382333Aug 16, 2019
44 min
Loop Quantum Gravity

Jim and Randy discuss loop quantum gravity, and integration of quantum mechanics and gravity that quantizes space-time itself through the use of uncertain quanta of volumes and the...

Spooky Action at a Distance
Ep 2382334Jul 15, 2019
47 min
Spooky Action at a Distance

Jim and Randy discuss experiments that put a minimum superluminal speed of communication between parts of a wavefunction.Show Notes: http://frontiers.physicsfm.com/44...

The Positive Energy Theorem
Ep 2382335Jun 6, 2019
34 min
The Positive Energy Theorem

Randy introduces Jim to a refutation of the positive energy theorem in a universe with a cosmological constant.Show Notes: http://frontiers.physicsfm.com/43...

Entropic Gravity
Ep 2382336May 4, 2019
36 min
Entropic Gravity

Jim and Randy discuss Eric Verlinde's theory thermodynamic theory of gravity. This theory purports to explain gravitational attraction and inertia through statistical mechanics.Sh...

The Chameleon Field
Ep 2382337Feb 24, 2019
33 min
The Chameleon Field

Randy and Jim discuss the chameleon field -- a way to model dark energy with a scalar boson of varying strength.Show Notes: http://frontiers.physicsfm.com/41...

The Octonions
Ep 2382338Dec 23, 2018
52 min
The Octonions

Randy tells Jim about a way to use an extension of an extension of the complex numbers to reveal the nature of elementary particles.Show Notes: http://frontiers.physicsfm.com/40...

Negative Effective Mass
Ep 2382339Dec 9, 2018
35 min
Negative Effective Mass

Randy tells Jim about experiments with Neutrons and Photons in materials that exhibit negative effective mass. Not only do these effects show that the inertial mass of quasipartic...

The Dimensionality of Space-Time
Ep 2382340Nov 25, 2018
43 min
The Dimensionality of Space-Time

Jim discusses why the world we observe is 4-dimensional with Randy. We discuss anthropic and fundamental reasons why we need 3 dimensions and no more than one time dimension for r...

The Einstein-Cartan Torsion Field Theory
Ep 2382341Oct 29, 2018
35 min
The Einstein-Cartan Torsion Field Theory

Randy explains to Jim theories on how to incorporate a native angular momentum into general relativity.Show Notes: http://frontiers.physicsfm.com/37...

The Metamaterial Stress Tensor
Ep 2382342Oct 14, 2018
42 min
The Metamaterial Stress Tensor

Randy tells Jim about recent results in the description of the electromagnetic stress tensor in metamaterials. In particular, we discuss the efforts to computationally model the s...

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