Abstract
In this paper, we study the gravitational wave energy density spectrum of cosmological de/confinement phase transition at finite baryon chemical potential within a soft wall model of AdS/QCD with Gauss-Bonnet correction. Focusing on the approach of dilaton/radion dominance approximation, we find the dual bounce action and the duration of the phase transition at the nucleation temperature. We also consider the possibility of a supercooling period during the transition, obtain the quantities characterizing the gravitational wave spectrum through this approach, and discuss the detectability prospect of generated gravitational wave signals by gravitational wave experiments.
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