Circularly polarized gravitational waves from parity-violating scalar-tensor theory
The episode discusses a paper on circularly polarized gravitational waves from parity-violating scalar-tensor theory by Feng, Fang, and Gao. Hosts discuss how this theory allows for observing asymmetry in gravitational wave handedness, which standard General Relativity does not predict. They explore how this effect can be seen at linear order and second order to constrain fundamental physics.