Gravitational Waves from Hidden QCD Phase Transition
High Energy Physics - Phenomenology
2017-11-08 v3
Abstract
Drastic changes in the early universe such as first-order phase transition can produce a stochastic gravitational wave (GW) background. We investigate the testability of a scale invariant extension of the standard model (SM) using the GW background produced by the chiral phase transition in a strongly interacting QCD-like hidden sector, which, via a SM singlet real scalar mediator, triggers the electroweak phase transition. Using the Nambu--Jona-Lasinio method in a mean field approximation we estimate the GW signal and find that it can be tested by future space based detectors.
Cite
@article{arxiv.1709.07572,
title = {Gravitational Waves from Hidden QCD Phase Transition},
author = {Mayumi Aoki and Hiromitsu Goto and Jisuke Kubo},
journal= {arXiv preprint arXiv:1709.07572},
year = {2017}
}
Comments
31 pages, 16 figures; references added, version accepted in PRD