Gravitational waves from first-order phase transitions: Ultra-supercooled transitions and the fate of relativistic shocks

Ryusuke Jinno, Hyeonseok Seong, Masahiro Takimoto +1

We study the gravitational wave (GW) production in extremely strong first order phase transitions where the latent heat density dominates the plasma energy density, $\alpha \gtrsim 1$. I…