Particle Production in f(R) Gravity during Structure Formation
General Relativity and Quantum Cosmology
2015-06-16 v2 High Energy Astrophysical Phenomena
Abstract
We study particle production in infrared-modified gravitational theories in the contemporary universe. It is shown that in astronomical systems with rising mass density, the curvature scalar may oscillate with very high frequency. These oscillations lead to efficient particle production and in an interesting range of model parameters could be a source of energetic cosmic rays. This effect either excludes some models of modified gravity or suggests a new mechanism of cosmic ray production.
Keywords
Cite
@article{arxiv.1305.5668,
title = {Particle Production in f(R) Gravity during Structure Formation},
author = {E. V. Arbuzova and A. D. Dolgov and L. Reverberi},
journal= {arXiv preprint arXiv:1305.5668},
year = {2015}
}
Comments
16 pages, 3 figures