Gravitational Wave Echoes of the First Order Phase Transition in a Kination-Induced Big Bang
This paper investigates the stochastic gravitational wave background generated by a first-order phase transition ending a kination-dominated epoch in the Kination-Induced Big Bang scenario, demonstrating that such a mechanism can dynamically induce metastability and produce a signal spanning nHz to MHz frequencies that is consistent with Pulsar Timing Array observations and testable by future interferometers.