Speaker
Peizhi Du
(University of Science and Technology of China)
Description
The standard cosmological model (ΛCDM model) assumes adiabatic initial conditions for primordial density perturbations. However, many new physics scenarios can deviate from this assumption and predict isocurvature perturbations across a large range of scales. In this talk, I will discuss interesting features of gravitational waves induced by isocurvature perturbations. I will also show that observations from pulsar timing arrays can place stringent limits on isocurvature at around $10^6$/Mpc.
Primary authors
Prof.
Yifu Cai
(University of Science and Technology of China)
Peizhi Du
(University of Science and Technology of China)
Jiahang Zhong
(University of Science and Technology of China)
