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arXiv · 2205.05667

Bubble dynamics in fluids with N-body simulations

Marek Lewicki·Ville Vaskonen·Hardi Veermäe
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Abstract

We present a new approach to studies of bubble dynamics in fluids. Relying on particle-based simulations, this method is general and suitable for cases where the commonly used perfect fluid description fails. We study expanding true vacuum bubbles surrounded by free or self-interacting particles and quantify how self-interactions affect the terminal bubble wall velocity. We find that, for sufficiently strongly self-interacting fluids, local thermal equilibrium is maintained around the bubble wall and the fluid profile is similar to that obtained with the perfect fluid description.

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Marek Lewicki, Ville Vaskonen, Hardi Veermäe. 2022-11-11. Bubble dynamics in fluids with N-body simulations. https://doi.org/10.1103/physrevd.106.103501

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