期刊
PHYSICAL REVIEW D
卷 106, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.106.103501
关键词
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资金
- Spanish MINECO [IJC2019-041533-I, FPA2017-88915-P, SEV-2016-0588]
- Spanish MICINN [PID2020- 115845 GB-I00/AEI/10.13039/501100011033]
- Generalitat de Catalunya [2017-SGR-1069]
- Polish National Science Center [2018/31/D/ST2/02048]
- Polish National Agency for Academic Exchange within Polish Returns Programme [PPN/PPO/2020/1/00013/U/00001]
- Estonian Research Council [PRG803, MOBTT5]
- EU through the European Regional Development Fund CoE program [TK133]
- CERCA program of the Generalitat de Catalunya
This study presents a new approach to studying bubble dynamics in fluids, which is suitable for cases where the commonly used perfect fluid description fails. The study finds that, for sufficiently strongly self-interacting fluids, local thermal equilibrium is maintained.
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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