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arXiv · 1709.07572

Gravitational Waves from Hidden QCD Phase Transition

Mayumi Aoki·Hiromitsu Goto·Jisuke Kubo
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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.

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Mayumi Aoki, Hiromitsu Goto, Jisuke Kubo. 2017-09-22. Gravitational Waves from Hidden QCD Phase Transition. https://doi.org/10.1103/physrevd.96.075045

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