I am the (co)author of the Higgsless (and before Hybrid) simulations for cosmological first-order phase transitions. 

I the following papers we describe the simulation scheme: Higgsless paper, Hybrid paper and Decaying sources

Videos, simulations and code available upon request to the authors

Collaboration with: Ryusuke Jinno, Thomas Konstandin, Isak Stomberg, Chiara Caprini and Alberto Roper Pol

We describe the how temperature fluctuations and domain walls can affect the GW signal from phase transitions.

Described in the following papers: Domain Walls, Density Perturbations

Collaboration with: Simone Blasi, Ryusuke Jinno, Thomas Konstandin, Isak Stomberg, Jorinde v. d. Vis

We show that density fluctuations in the line-of-sight of GWs can affect their propagation, in an effect similar to the (Integrated) Sachs-Wolfe.

Described in the following paper: Density fluctuations

Collaboration with: Ryusuke Jinno, Valerie Domcke

We indicate the perspectives of using normalizing flows and numerical methods for the very known case of Post-Minkowski expansion

Described in the following paper: Normalizing-flows and PM

Collaboration with: Ryusuke Jinno, Gragor Kälin, Zhengwen Liu