Jim Rantschler and Randy Morrison discuss physics from elementary particles to cosmological effects at the limits of our theoretical knowledge or have recently emerged.
https://www.podomatic.com/podcasts/physicsfrontiers-rantschler
The Chameleon Field
Randy and Jim discuss the chameleon field -- a way to model dark energy with a scalar boson of varying strength.
Show Notes: http://frontiers.physicsfm.com/41