5 papers
Nonlinear growth and amplification of phase-transition gravitational waves induced by cosmic expansion
Xiao Wang, Chi Tian, Csaba Balázs
We perform the first three-dimensional hydrodynamical simulations of cosmological first-order phase transitions in an expanding background. These simulations consistently incorpora…
HydroGrav: Precise hydrodynamics and gravitational waves for cosmological phase transitions
Flynn Linton, William Searle, Xiao Wang +1
We present HydroGrav, a C++ code used to construct self-similar fluid profiles, using the exact equation of state determined directly from the effective potential, for any particle…
Using Gravitational Wave Signals to Disentangle Early Matter Dominated Epochs
Matthew Pearce, Lauren Pearce, Graham White +1
Curvature perturbations induce gravitational waves (GWs) at second order, contributing to the stochastic gravitational wave background. The resulting gravitational wave spectrum is…
DeepSSM: an emulator of gravitational wave spectra from sound waves during cosmological first-order phase transitions
Chi Tian, Xiao Wang, Csaba Balázs
We present DeepSSM, an open-source code powered by neural networks (NNs) to emulate gravitational wave (GW) spectra produced by sound waves during cosmological first-order phase tr…
Machine Learning Left-Right Breaking from Gravitational Waves
William Searle, Csaba Balázs, Yang Xiao +1
First-order phase transitions in the early universe can generate stochastic gravitational waves (GWs), offering a unique probe of high-scale particle physics. The Left-Right Symmet…