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Physics Frontiers

Jim Rantschler

Jim Rantschler and Randy Morrison discuss physics from elementary particles to cosmological effects at the limits of our theoretical knowledge or have recently emerged.

Episodes

20 of 82 episodes

Episode 83: Do Aliens Speak Physics with Daniel Whiteson

Jim talks with Daniel Whiteson of the University of California at Irvine about his new book _Do Aliens Speak Physics,_ In this discussion we...

61:47Oct 27, 2025

Episode 82: Quantum Random Access Memory with Koustubh Phalak

Jim talks with Koustubh Phalak about quantum random access memory (QRAM), a proposed technology that would allow the storage of quantum stat...

66:46Sep 30, 2025

Episode 81: Pixelated Space Time with Philip Tee

Jim talks with Philip Tee about the effects of a fundamental length scale. Phil uses doubly special relativity to try to find observable eff...

62:26Feb 9, 2025

Episode 80: Emergent Decoherent Histories with Philipp Strasberg

Jim talks with Philipp Strasberg about his simulations of branching and recombining processes in the evolution of quantum states, and their...

73:41Dec 29, 2024

Episode 79: Primordial Black Holes with QCD Color Charge with Elba Alonso-Monsalve and David Kaiser

Jim talks with Elba Alonso-Monsalve and David Kaiser about the prospects to describe dark matter as tiny black holes that were created at th...

59:31Sep 4, 2024

Episode 78: Quantum Machine Learning with Bruna Shinohara

Jim talks with Bruna Shinohara of CMC Microsystems. Quantum computing and machine learning are both currently making huge strides. So it is...

51:05May 31, 2024

Episode 77: Maxwellian Ratchets with Alex Jurgens

Jim talks with Alex Jurgens about Maxwellian ratchets, automata that are similar to Maxwell's Demon. They talk about their implications for...

81:10Mar 31, 2024

Episode 76: Undeciability and Theories of Everything with Claus Kiefer

Jim talks with Claus Kiefer about the implications of Goedel's incompleteness theorems on the search for the theory. Show Notes: http://fron...

49:40Jan 29, 2024

Episode 75: Categorical Probability and the Measurement Problem

Jim talks with Nick Ormrod and V. Vilasini about their use of categorical probability theory to analyze the measurement problem. We discuss...

67:24Aug 20, 2023

Episode 74: Stochastic Thermodynamics with David Wolpert

Jim talks with David Wolpert about the non-equilibrium behavior of computation, what it means for entropy, and how it relates to traditional...

50:23Jul 9, 2023

Episode 73: Quantum Money with Jiahui Liu

Jim discusses quantum money with Jiahui Liu. Quantum money is a linchpin of quantum cryptography. The ability to create secure banknotes usi...

60:43Jun 18, 2023

Episode 72: Born Rule and Gravity with Antony Valentini

Jim talks with Antony Valentini about the difficulties of interpretation of quantum mechanics in light of quantum gravity. In particular, An...

73:54Apr 23, 2023

Episode 71: Primordial Graviton Background

Jim talks with Sunny Vagnozzi about using the Primoridial Graviton Background to rule out all inflation models. Show Notes: http://frontiers...

45:39Feb 19, 2023

Episode 70: Path Integrals and Entanglement with Ken Wharton

Jim talks with Ken Wharton about how to describe entangled states as sums over histories of particle paths using the path integral method. H...

46:30Dec 18, 2022

Episode 69: The Flavor Puzzle with Joe Davighi

Jim talks with Joe Davighi of the University of Zurich about the flavor unification at high energies - the merging of all leptons into one k...

43:00Nov 20, 2022

Episode 68: Quantum Resource Theories with Gilad Gour

Jim talks with Gilad Gour of the University of Toronto about quantum resource theories. These are theories of largish systems that describe...

51:29Sep 26, 2022

Episode 67: Optical Gravity with Matthew R. Edwards

Jim talks with Matthew R. Edwards about his theory of Optical Gravity. This is a Le Sage model of gravity based on graviton filiments. Show...

35:00Aug 14, 2022

Episode 66: The Limit of General Relativity with James Owen Weatherall

Jim talks with James Owen Weatherall about his work on viewing general relativity as an effective field theory and where it should give way...

30:09Jun 26, 2022

Episode 65: Causality, Time and the Experiment Paradox with Michal Eckstein

Jim talks with Michal Eckstein of the Copernicus Institute for Interdisciplinary Studies about how two different kinds of ordering, chronolo...

65:04May 22, 2022

Episode 64: Born's Rule with Blake Stacey

Jim talks with Blake Stacey about recent attempts to replace Born's rule. Born's rule is the principle used in quantum mechanics that associ...

29:18Apr 24, 2022