Speaker
Shaoping Li
Description
MeV-scale first-order phase transitions (FOPT) can generate stochastic gravitational waves (GW) in
the nanohertz frequency, which can now be probed by Pulsar Timing Array experiments and will be targeted by
Square Kilometer Array. Nanohertz GW can also give rise to spectral distortions in the cosmic microwave
background and modification of the effective number of neutrino species, providing complementary probes in
cosmology. In addition, MeV-scale FOPT can also leave some strong consequences at colliders. This talk is
devoted to these complementary probes in cosmology and colliders, and bringing the challenges of dark
matter production in the minimal setup.
