Speaker
Antonino Midiri
(University of Geneva)
Description
Understanding the Gravitational Wave background from stochastic processes in the early Universe requires studying the unequal time correlator (UETC) of the anisotropic stress tensor of the source. Some of the contributions to the Gravitational Wave spectrum generated in a First-Order Phase Transition can be described assuming a constant-in-time UETC. We show how the constant-in-time model can be used to understand those contributions and, in particular, its application to the Gravitational Wave spectrum from lattice simulations of relativistic hydrodynamic turbulence.
