Speaker
Mingzhe Li
(University of Science and Technology of China)
Description
It is not easy to have a healthy parity violating gravity models within Riemannian geometry. The famous Chern-Simons modified general relativity and its extensions are pathological due to the ghost modes appeared at high energy scales. In this talk, I will introduce some parity violating models within the framework of teleparallel gravity, especially the Nieh-Yan modified teleparallel gravity model, which is healthy and robust. It predicts the velocity birefringence phenomenon in gravitational waves and has more interesting applications in cosmology.
Primary author
Mingzhe Li
(University of Science and Technology of China)
