Physics Frontiers

Latest Episodes:

Episode 63: Gleason's Theorem with Blake Stacey Mar 20, 2022

Show notes

Jim talks with Blake Stacey about Gleason's Theorem, a foundational topic in the foundations of quantum mechanics. Gleason's theorem gives us a set of characteristic states for a measurement and the probability rule associated measuring them. This is the first part of the interview. The second part will discuss recent attempts to replace the Born Rule.
Show Notes: http://frontiers.physicsfm.com/63

Episode 62: Deformed Special Relativity Feb 13, 2022

Show notes

Jim and Randy talk about how special relativity might be amended to incorporate a minimum length scale. Such scales are common in quantum gravity theories, and in the limit where both QM and GR are less important, QG should induce first order corrections to SR. We then talk about how these corrections seem to lead to unreasonable paradoxes.
Show Notes: http://frontiers.physicsfm.com/62

Episode 61: Dark Stars Oct 31, 2021

Show notes

Jim and Randy talk about alternatives to black holes without event horizons or singularities.
Show Notes: http://frontiers.physicsfm.com/61

Episode 60: Warp Bubbles Sep 12, 2021

Show notes

Randy tells Jim about developments of metrics describing isolated spacetime bubbles that could, possibly, move faster than light.
Show Notes: http://frontiers.physicsfm.com/60

Episode 59: The Hubble Crisis Jul 05, 2021

Show notes

Randy and Jim discuss the current tension between measurements of the Hubble constant by different methods, and some attempts to resolve the issue.
Show Notes: http://frontiers.physicsfm.com/59

Episode 58: Phantom Matter Jun 06, 2021

Show notes

Jim and Randy talk about the Higgs portal to dark matter and the nightmare scenario for particle physicists: what if the LHC never saw any traces of supersymmetric particles?
Show Notes: http://frontiers.physicsfm.com/58

Episode 57: Quantum Effects in Gravitational Waves May 02, 2021

Show notes

Randy and Jim talk about two proposals to use gravitational wave interferometry to show that gravitons exist through noise measurements.
Show Notes: http://frontiers.physicsfm.com/57

Episode 56: Anomalous Magnetic Moment of the Muon Apr 01, 2021

Show notes

Jim and Randy discuss the measurements of the anomalous magnetic moment of the muon and some of the ways in which the discrepancy between theory and experiment could manifest themselves in new physics.
Show Notes: http://frontiers.physicsfm.com/56

Episode 55: Multiversality Dec 07, 2020

Show notes

Jim and Randy discuss the rationales for multiverses based on quantum mechanics, string theory, and the anthropic principle.
Show Notes: http://frontiers.physicsfm.com/55

Episode 54: The ANITA Experiment Oct 18, 2020

Show notes

Randy and Jim talk about the strange results of the ANITA experiment: tau neutrinos that seem to come up out of the Earth.
Notes: http://frontiers.physicsfm.com/54

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