Primordial gravitational waves in the emergent universe

PALERMO, OCTAVIO; BENGOCHEA, GABRIEL R.

Buenos Aires

Congreso; 64 Reunión de la Asociación Argentina de Astronomía (RAAA); 2022

IAFE (CONICET-UBA)

In this presentation we focus on studying the quantum origin of primordial gravitational waves, taking as a starting point the Emergent Universe. A joint metric-matter quantization is performed within the framework of the Continuous Spontaneous Localization (CSL) theory, which in addition to its role as a driver of the quantum-to-classical transition it works as a mechanism for generating tensor perturbations. We analyze the impact of these models on the primordial spectrum of tensor modes.