Baryon Asymmetry, Inflation and Squeezed States

TL;DR

This paper investigates how squeezed states and parametric amplification during inflation can generate baryon asymmetry through B and CP violation in an expanding universe.

Contribution

It introduces a formalism using squeezed rotated states to calculate baryon asymmetry from inflationary dynamics with B and CP violation.

Findings

Differential amplification of particle and anti-particle modes leads to baryon asymmetry.

The formalism connects quantum state evolution during inflation to matter-antimatter imbalance.

Baryon asymmetry can arise naturally from inflationary quantum fluctuations.

Abstract

We use the general formalism of squeezed rotated states to calculate baryon asymmetry in the wake of inflation through parametric amplification. We base our analysis on a B and CP violating Lagrangian in an isotropically expanding universe. The B and CP violating terms originate from the coupling of complex fields with non-zero baryon number to a complex background inflaton field. We show that a differential amplification of particle and anti-particle modes gives rise to baryon asymmetry.