Entropy generation in cosmological particle creation

TL;DR

This paper proposes a simplified cosmological model where entropy generation during the early universe is attributed to quantum instabilities leading to particle creation, offering an alternative view on the universe's irreversible evolution.

Contribution

It introduces a novel approach linking quantum instabilities to entropy production and particle creation in the early universe.

Findings

Entropy generation is modeled as a consequence of quantum instabilities.

Particle creation arises naturally from the proposed instability mechanism.

The approach offers an alternative perspective on early universe evolution.

Abstract

A very simplified model of the Universe is considered in order to propose an alternative approach to the irreversible evolution of the Universe at very early times. The entropy generation at the quantum stage can be thought as a consequence of an instability of the system. Then particle creation arises from this instability.