Exploring first-order phase transitions in holographic models: From early universe to neutron stars

Gravitational waves offer a promising method for detecting signatures of first-order phase transitions. Utilizing holography, which effectively handles the challenges of strongly coupled phenomena, we probe deep into the behaviors of neutron stars and the early universe. Our methodology includes computing the effective action to obtain crucial nucleation theory parameters. For the wall speed we suggest estimation through D-brane nucleation dynamics. Additionally, we derive an equation of state for strong interactions, indicating that a first-order deconfinement phase transition is plausible at high densities. This combined theoretical approach moves us toward verifying the existence of deconfined matter in nature.