Open AccessGravitational waves from phase transition in a QCD-like hidden sector
Author(s) -
M. Aoki,
Jisuke Kubo
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1468/1/012004
Subject(s) - physics , gravitational wave , gravitational wave background , interferometry , observer (physics) , signal (programming language) , gravitational wave observatory , phase transition , quantum electrodynamics , astrophysics , optics , quantum mechanics , computer science , programming language
The gravitational wave (GW) background produced at the chiral phase transition in a conformal extension of the standard model is studied. We compute the bounce solution by the iteration method and find that the transition’s inverse duration β normalized to the Hubble parameter H is β/H ≳ 10 3 which implies that the sound wave period τ sw as an active GW source is shorter than 1/ H . Using the factor τ sw H as the reduction factor for the sound wave contribution to the total GW spectrum, we evaluate the signal-to-noise ratio for the future space-based GW interferometer experiments. In the optimistic case we find that the GW signal could be detected by Big Bang Observer.