Energy budget of cosmological first-order phase transition in FLRW background
arXiv:1803.03002 · doi:10.1007/s11433-018-9216-7
Abstract
We study the hydrodynamics of bubble expansion in cosmological first-order phase transition in the Friedmann-Lema\^ıtre-Robertson-Walker (FLRW) background with probe limit. Different from previous studies for fast first-order phase transition in flat background, we find that, for slow first-order phase transition in FLRW background with a given peculiar velocity of the bubble wall, the efficiency factor of energy transfer into bulk motion of thermal fluid is significantly reduced, thus decreasing the previously-thought dominated contribution from sound wave to the stochastic gravitational-wave background.
v1, 36 pages, 8 figures; v2, 37 pages, 8 figures, major change of conclusion whose application range has shrunk down to the case of slow first-order phase transition, added reference and acknowledgement; v3, 38 pages, 8 figures, version accepted for publication online in Sci.China Phys.Mech.Astron
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- Gravitational waves and extra dimensions: a short review
- Gravitational effects on fluid dynamics in cosmological first-order phase transitions
- Fundamental Physics and Cosmology with TianQin
- Primordial Black Holes Formed during Magneto-Hydrodynamic Turbulence in The Early Universe as Dominant Part of Dark Matter
- Vacuum bubbles from cosmic ripples