Jim talks with Alex Jurgens about Maxwellian ratchets, automata that are similar to Maxwell's Demon.  They talk about their implications for information processing and entropy. http://frontiers.physicsfm.com/77 ..read more

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 ..read more

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.  ..read more

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 Notes: http://frontiers.physicsfm.com/67 ..read more

Jim talks with Blake Stacey about recent attempts to replace Born's rule.  Born's rule is the principle used in quantum mechanics that associates quantum states to the probability of measurement.  There has been a recent interest in Quantum Foundations to try to find a less arbitrary rationale for this procedure.   Show Notes: http://frontiers.physicsfm.com/64 ..read more

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 ..read more

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

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 ..read more

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 ..read more

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 ..read more