Droplet collapse during strongly supercooled transitions

Daniel Cutting, Essi Vilhonen, David Weir

Research output: Contribution to journalArticleScientificpeer-review


We simulate the decay of isolated, spherically symmetric droplets in a cosmological phase transition. It has long been posited that such heated droplets of the metastable state could form, and they have recently been observed in 3D multibubble simulations. In those simulations, the droplets were associated with a reduction in the wall velocity and a decrease in the kinetic energy of the fluid, with a consequent suppression in the gravitational wave power spectrum. In the present work, we track the wall speed and kinetic energy production in isolated droplets and compare them to those found in multibubble collisions. The late-time wall velocities that we observe match those of the 3D simulations, though we find that the spherical simulations are a poor predictor of the kinetic energy production. This implies that spherically symmetric simulations could be used to refine baryogenesis predictions due to the formation of droplets, but not to estimate any accompanying suppression of the gravitational wave signal.
Original languageEnglish
Article number103524
JournalPhysical Review D
Issue number10
Number of pages17
Publication statusPublished - 23 Nov 2022
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 114 Physical sciences

Cite this