A common origin of two accelerating universes: inflation and dark energy
Abstract
We develop a quantum theory of inflaton and its decay product of various gauge boson pairs to investigate the preheating towards thermalized universe. The inflaton decay into gauge-boson pairs is shown to be inevitably accompanied by tachyon-mass-like correction to inflation potential that ultimately leads to an inflaton escape out of trapped local potential minimum towards the field infinity. This gives rise to a conversion mechanism of early inflationary acceleration to a quintessence dark energy acceleration at late stages of cosmic evolution. The success of the escape depends on how standard particles are incorporated into a scheme of extended Jordan-Brans-Dicke gravity. New types of super-radiance mechanism that enhance the ending of preheating are identified and compared with the Dicke model.
Cite
@article{arxiv.2503.02409,
title = {A common origin of two accelerating universes: inflation and dark energy},
author = {Kunio Kaneta and Kin-ya Oda and Motohiko Yoshimura},
journal= {arXiv preprint arXiv:2503.02409},
year = {2025}
}
Comments
16 pages and 7 figures. Misidentified inflaton gauge field coupling is corrected, with detailed explanations in Appendix