Time evolution of the energy density inside a non-static cavity with a thermal, coherent and a Schrodinger cat state

TL;DR

This paper studies how the energy density of a massless scalar field evolves over time inside a non-static cavity under various initial states, using an exact numerical approach to understand dynamic quantum field behavior.

Contribution

It applies an exact numerical method to analyze the time evolution of energy density for different initial quantum states in a non-static cavity.

Findings

Energy density varies significantly with initial state and boundary conditions.

The method accurately captures dynamic changes in quantum fields.

Results provide insights into quantum field behavior in non-static geometries.

Abstract

In this paper we investigate the time evolution of the energy density for a real massless scalar field in a two-dimensional spacetime, inside a non-static cavity, taking as basis the exact numerical approach purposed by Cole and Schieve. Considering Neunmann and Dirichlet boundary conditions, we investigate the following initial states of the field: vacuum, thermal state, the coherent state and the Schrodinger cat state.