Quantum interference in gravitational particle production
General Relativity and Quantum Cosmology
2023-01-18 v2 High Energy Physics - Theory
Abstract
Previous numerical investigations of gravitational particle production during the coherent oscillation period of inflation displayed unexplained fluctuations in the spectral density of the produced particles. We argue that these features are due to the quantum interference of the coherent scattering reactions that produce the particles. We provide accurate analytic formulae to compute the particle production amplitude for a conformally-coupled scalar field, including the interference effect in the kinematic region where the production can be interpreted as inflaton scattering into scalar final states via graviton exchange.
Cite
@article{arxiv.2209.01713,
title = {Quantum interference in gravitational particle production},
author = {Edward Basso and Daniel J. H. Chung and Edward W. Kolb and Andrew J. Long},
journal= {arXiv preprint arXiv:2209.01713},
year = {2023}
}
Comments
19 pages + appendices and references, 3 figures, v2 - references added, matches JHEP