Cosmological Particle Creation and Dynamical Casimir Effect

TL;DR

This paper investigates particle creation in a closed Robertson-Walker universe, modeling it as a dynamical Casimir effect with a conformally coupled scalar field and time-dependent scale factor.

Contribution

It introduces a novel analysis of particle creation in a cosmological setting as a dynamical Casimir effect with moving boundaries.

Findings

Demonstrates particle creation due to universe expansion.

Shows the effect of conformal coupling on particle production.

Provides a framework for analyzing quantum fields in curved spacetime.

Abstract

In this paper we have considered the particle creation in the spatially closed Robertson-Walker space-time. We considered a real massive scalar field which conformally coupled to the Robertson-Walker background. With the dependence of the scale factor on time, the case under consideration is a dynamical Casimir effect with moving boundaries.