Time-crystal ground state and production of gravitational waves from QCD phase transition

Summary, in English

We propose a novel mechanism for the production of gravitational waves in the early Universe that originates from the relaxation processes induced by the QCD phase transition. While the energy density of the quark-gluon mean-field is monotonously decaying in real time, its pressure undergoes a series of violent oscillations at the characteristic QCD time scales that generate a primordial multi-peaked gravitational waves signal in the radio frequencies' domain. The signal is an echo of the QCD phase transition that is accessible by planned measurements at the FAST and SKA telescopes.

• Author: Andrea Addazi; Antonino Marcianò; Roman Pasechnik
• Department/s: Theoretical Particle Physics - Has been reorganised
• Publishing year: 2019-06-01
• Language: English
• Publication/Series: Chinese Physics C
• Volume: 43
• Issue: 6
• Links: http://dx.doi.org/10.1088/1674-1137/43/6/065101
• Document type: Journal article
• Publisher: IOP Publishing
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1674-1137