期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2021/03/009
关键词
cosmological phase transitions; gravitational waves / theory; physics of the early universe
资金
- Fermi National Accelerator Laboratory (Fermilab), a U.S. Department of Energy, Office of Science, HEP User Facility
- Fermi Research Alliance, LLC (FRA) [DE-AC02-07CH11359]
- National Science Foundation [PHY-1607611]
- Department of Energy (DOE) [DE-SC0019195]
- U.S. Department of Energy (DOE) [DE-SC0019195] Funding Source: U.S. Department of Energy (DOE)
In this study, we analyzed the expansion of Higgs condensate bubbles during a first-order electroweak phase transition in the early Universe. The interaction of particles with the bubble wall may involve the emission of multiple soft gauge bosons. Resummation to all orders is necessary when the wall velocity is large, and we performed this resummation analytically and numerically at leading logarithmic accuracy. Both approaches agreed to a 10% level, and for fast-moving walls, we found a scaling of the thermal pressure exerted against the wall.
We analyze Higgs condensate bubble expansion during a first-order electroweak phase transition in the early Universe. The interaction of particles with the bubble wall can be accompanied by the emission of multiple soft gauge bosons. When computed at fixed order in perturbation theory, this process exhibits large logarithmic enhancements which must be resummed to all orders when the wall velocity is large. We perform this resummation both analytically and numerically at leading logarithmic accuracy. The numerical simulation is achieved by means of a particle shower in the broken phase of the electroweak theory. The two approaches agree to the 10% level. For fast-moving walls, we find the scaling of the thermal pressure exerted against the wall to be P similar to gamma T-2(4), independent of the particle masses, implying a significantly slower terminal velocity than previously suggested.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据