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

Abstract

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 generates a primordial multi-peaked gravitational waves' signal in the radio frequencies' domain. The signal as an echo of the QCD phase transition, and is accessible by the FAST and SKA telescopes.

arXiv comment12 pages, 4 figures

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Cited by in corpus (5)

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• Different faces of confinement
• Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review
• Non-trivial time crystal-like ground state for gravitational perturbation in quadratic gravity
• Cosmology from Strong Interactions