Sunday, May 22, 2022

Causality, Time and the Experiment Paradox

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Recorded: 2022/03/21 Released: 2022/05/22

Jim talks to Michal Eckstein of the Coperincus Center for Interdisciplinary Studies on how two different ways to order events, that of chronology (this comes before that) and causality (this makes that happen) come together to define time. We then go on to discuss the Experiment Paradox, which pulls together a number of measurement paradoxes in physics.
------------------------------------------- Notes:

1. Michal Eckstein's articles we discussed in this program:
2. Michal Eckstein's articles that we discussed in this program:
  • Ehlers, J., F.A.E. Pirani, A. Schild, “The Geometry of Free Fall and Light Propagation [2012 Republication].” General Relativity: Papers in Honour of J. L. Synge, 63. (1972).
  • Linnemann, N. and J. Read, "Constructive Axiomatics in Spacetime Physics Part I: Walkthrough to the Ehlers-Pirani-Schild Axiomatisation" (2021). [arXiv]
  • Minguzzi, E. and M. Sanchez, "The Causal Heirarchy of Space Times." Recent Developments in Pseudo-Riemannian Geometry, 299 (2008). [arXiv]
3. Related Episodes of Physics Frontiers:
4. Please visit and comment on our subreddit, YouTube Channel, or Twitter account. These are also places to look for announcements of new episodes and the like. And if you could help us keep this going by contributing to our Patreon, we'd be grateful.
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Sunday, April 24, 2022

Born's Rule

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Recorded: 2022/01/18 Released: 2022/04/24

Jim discusses Gleason's Theorem with Blake C. Stacey of the University of Massachuesetts - Boston. Gleason's Theorem is a theorem in the foundations of quantum mechanics that, for a system meets some simple requirements, you can find a set of valid staes and a rule for calculating probailities, a la the Born Rule. This is the first part of the interview, the next will be on Blake's discussion of how people are trying to reformulate the Born Rule.
------------------------------------------- Notes:

1. Papers we both read for this program:
2. This series:

Sunday, March 20, 2022

Gleason's Theorem

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Recorded: 2022/01/18 Released: 2022/03/20

Jim discusses Gleason's Theorem with Blake C. Stacey of the University of Massachuesetts - Boston. Gleason's Theorem is a theorem in the foundations of quantum mechanics that, for a system meets some simple requirements, you can find a set of valid staes and a rule for calculating probailities, a la the Born Rule. This is the first part of the interview, the next will be on Blake's discussion of how people are trying to reformulate the Born Rule.
------------------------------------------- Notes:

1. Papers we both read for this program:
2. Other papers one or the other of us read: 3. Books mentioned in the discussion:
  • David W. Cohen, An Introduction to Hilbert Space and Quantum Mechanics[Amazon] The book I found in a college book store in the 1990's. Short, written for mathemtics undergraduate students (at the upper division, high-end SLAC level), but also accessible to philosophy and physics students who can read math. Video review here.
  • John von Neumann, Mathematical Foundations of Quantum Mechanics[Amazon] A classic text that started a lot of this quantum philosophy nonsense in the first place. Very difficult read.
  • Michaal Neilson and Isaac Chuang, Quantum Computation and Quantum Information.[Amazon] An early, well known book on quantum information. This is one of three technical books that I've had to replace because my original copy wandered off with a graduate student to postdocs unknown.
  • John Bell, Speakable and Unspeakable in Quantum Mechanics. [Amazon]
  • This is a collection of essays by John Bell, some of which are very important, and others of which you might not think are important until you start reading the philosophy of physics literature. Blake mentioned two papers that I think are in this volume. One is "On the Einstein-Poldosky-Rosen Paradox," which was originally published in the small jounal below.

4. Physics-Physique-Fisika, the journal Blake Stacey mentioned in our discussion.

5. Related Episodes of Physics Frontiers:
6. Please visit and comment on our subreddit, YouTube Channel and if you can help us keep this going by contributing to our Patreon, we'd be grateful.
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Sunday, February 13, 2022

Deformed Special Relativity

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Recorded: 2021/08/08 Released: 2022/02/13

Randy and Jim discuss first order corrections to special relativity in light of quantum gravity: deformed special relativity. What should happen to space time if a minimum length scale is introduced to special relativity?
------------------------------------------- Notes:

1. Papers we both read for this program:
2. Other papers one or the other of us read: 3. Related Episodes of Physics Frontiers:
4. Randy's obituary and my Patreon post on his death. 5. Please visit and comment on our subreddit, YouTube Channel and if you can help us keep this going by contributing to our Patreon, we'd be grateful.
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