English

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.

Keywords

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