75 episodes

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

Physics Frontiers Jim Rantschler

    • Science
    • 4.8 • 10 Ratings

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

    Undeciability and Theories of Everything with Claus Kiefer

    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://frontiers.physicsfm.com/76

    • 49 min
    Categorical Probability and the Measurement Problem

    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 categorical probability theory, which allows them to abstract from particular mathematical formulations of quantum mechanics to more general ideas about states and measurements and observers than found in Hilbert space formulations.  They use this to look at the various properties of quantum mechanics and how they relate to each other, in particular how relativity affects the measurement problem.Show Notes: http://frontiers.physicsfm.com/75

    • 1 hr 7 min
    Stochastic Thermodynamics with David Wolpert

    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 thermodynamics.Show Notes: http://frontiers.physicsfm.com/74

    • 50 min
    Quantum Money with Jiahui Liu

    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 using quantum computers would allow even more secure methods of encryption for communications. 

    • 1 hr
    Born Rule and Gravity with Antony Valentini

    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, Antony discusses the failure of the Born Rule due to the impossibility of normalization (the fact that probabilities must sum to 100%) at that scale, and therefore the need to interpret the wavefunction as something more than merely the knowledge of the observer about the system.  They spend some time talking about the de Broglie-Bohm interpretation in light of quantum gravity.Show Notes: http://frontiers.physicsfm.com/72

    • 1 hr 13 min
    Primordial Graviton Background

    Primordial Graviton Background

    Jim talks with Sunny Vagnozzi about using the Primoridial Graviton Background to rule out all inflation models. Show Notes: http://frontiers.physicsfm.com/71

    • 45 min

Customer Reviews

4.8 out of 5
10 Ratings

10 Ratings

underthesouthernX ,

Hey Jim

Randy was a polymath and an enigma! What a loss. You handled it with great dignity and humility. Please don’t stop your podcast service. The episode format is unique, the technical level is really satisfying and your dedication to your field is witnessed and appreciated.

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