Episode notes
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
Podcast
Physics Frontiers
Jim Rantschler · Tech & Science · English
Jim Rantschler and Randy Morrison discuss physics from elementary particles to cosmological effects at the limits of our theoretical knowledge or have recently emerged.
More from Physics Frontiers All episodes →
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22 Sep 2019 · 45 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
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16 Aug 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 random connections between them.
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16 Jul 2019 · 48 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
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6 Jun 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
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4 May 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. Show Notes: http://frontiers.physicsfm.com/42
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23 Dec 2018 · 53 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
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9 Dec 2018 · 36 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 quasiparticles in a material can become negative, they show that these negative mass quasiparticles act like they have negative gravitational mass, as well. Show Notes: http://frontiers.physicsfm.com/39
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25 Nov 2018 · 44 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 reasons of complexity, predictability and stability. Show Notes: http://frontiers.physicsfm.com/38
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30 Oct 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
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15 Oct 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 stress tensor in amorphous metamaterials. Show Notes: http://frontiers.physicsfm.com/36
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