Speaker
Dr
贇 蒋
(Sun Yat-Sen (Zhongshan) University)
Description
In this talk we will present the formation of multiple vacuum states in axion models with non-degenerate vacua, which originate from vacuum fluctuations amplified via parametric resonance. The domains are classified as sub-horizon, cross-horizon, or super-horizon on their scale upon formation, leading to the different cosmic evolution as well as gravitational wave spectrum
