The cosmic QCD phase transition with dense matter and its gravitational waves from holography

Abstract

Consistent with cosmological constraints, there are scenarios with the large lepton asymmetry which can lead to the finite baryochemical potential at the cosmic QCD phase transition scale. In this paper, we investigate this possibility in the holographic models. Using the holographic renormalization method, we find the first order Hawking-Page phase transition, between Reissner-Nordström AdS black hole and thermal charged AdS space, corresponding to the de/confinement phase transition. We obtain the gravitational wave spectra generated during the evolution of bubbles for a range of the bubble wall velocity and examine the reliability of the scenarios and consequent calculations by gravitational wave experiments. 1

String fragmentation in supercooled confinement and implications for dark matter

“…A possible impact on the QCD phase transition, e.g. [104][105][106][107][108][109][110][111][112][113], remains to be investigated.…”

Gravitational waves from hidden QCD phase transition

“…In most of the parameter space, the DM mass is created before the EW phase transition and, in a certain region of the parameter 1 Other possibilities of a first order phase transition in a QCD-like theory are the deconfinment/confinement phase transition in the quenched QCD [35] and the chiral phase transition in QCD with a large baryon chemical potential [37,38]. They may produce the observable GW signal as discussed in [39][40][41].…”

Six flavor quark matter

“…3.1), and because the bubble walls interact strongly with the plasma. Since earlier studies of gravitational waves from a first order phase transition at the QCD epoch have assumed a runaway [31,[65][66][67][68][69][70], those results are not directly applicable to our model. Therefore we would argue that a more careful calculation of the gravitational wave signal from a first order, non-runaway QCD phase transition is warranted.…”