Enhancement of particle creation in nonlinear resonant cavities
High Energy Physics - Theory
2023-03-07 v2 General Relativity and Quantum Cosmology
Quantum Physics
Abstract
The rate of particle creation in a resonantly oscillating cavity is known to be approximately constant at large evolution times. Employing the Schwinger-Keldysh diagrammatic technique, we show that nonlinear interactions generate nonzero quantum averages and significantly enhance this rate. To illustrate this phenomenon, we consider a massless scalar field with a quartic interaction in a one-dimensional cavity with perfectly reflecting walls oscillating at twice the fundamental frequency.
Cite
@article{arxiv.2209.10462,
title = {Enhancement of particle creation in nonlinear resonant cavities},
author = {Dmitrii A. Trunin},
journal= {arXiv preprint arXiv:2209.10462},
year = {2023}
}
Comments
8 pages, 2 figures. v2: several amendments made