A cosmologia com violação da invariância de Lorentz via teorias tipo-éter.

Abstract

This dissertation considers that in Cosmology, the effects of Lorentz Invariance Violation (LIV) have implications for the inflationary phase of the Universe. The idea is that in the initial phase, LIV acts non-locally in gravitational interactions, and then, in the phase of accelerated expansion of the inflationary Universe. This additional mechanism for producing inflation can be used to solve initial conditions problems. From this perspective, we must revisit inflationary Cosmology through effective theories such as those involving ether-graviton, ether-inflaton couplings. In this scenario, we must also develop theoretical and phenomenological mechanisms to impose new limits on LIV via current measurements of the Cosmic Microwave Background (CMB).