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arxiv: 1709.07572 · v3 · pith:YJ6SU6HQnew · submitted 2017-09-22 · ✦ hep-ph

Gravitational Waves from Hidden QCD Phase Transition

Mayumi Aoki , Hiromitsu Goto , Jisuke Kubo This is my paper
classification ✦ hep-ph
keywords phasetransitionbackgroundgravitationalhiddenapproximationchangeschiral
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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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