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Bubble dynamics in fluids with N-body simulations
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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.
Forward citations
Cited by 2 Pith papers
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Primordial Black Hole from Tensor-induced Density Fluctuation: First-order Phase Transitions and Domain Walls
Tensor perturbations from FOPT and domain-wall sources are claimed to induce second-order scalar perturbations large enough to form primordial black holes, potentially all of the dark matter.
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Thermalization effects on the dynamics of growing vacuum bubbles
Bubble-wall terminal velocity depends on plasma thermalization; non-equilibrium and free-streaming regimes give slower or different walls, and stationary solutions can be bypassed by runaways.
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