论文标题
一阶宇宙学相变的重力波：声波源的寿命
Gravitational waves from first-order cosmological phase transitions: lifetime of the sound wave source
论文作者
论文摘要
我们系统地调查了早期宇宙中一阶相变的粒子物理模型的一般参数化，包括在零温度下具有和没有障碍的多项式电势的模型，以及具有经典尺度不变的电位的Coleman-Weinberg样模型。我们区分了过渡，爆炸，偏移和杂种的三种可能性 - 并考虑在这些模型中的过渡过程中产生引力波的声波和湍流机制，从而在每种情况下检查成功渗透的要求。我们认为，在没有零温屏障的模型中，在规模不变的模型中，声波产生引力波仅持续的时期仅在一定的一阶宇宙学相变之后的一小部分hubble时间，而在某些模型中，它可能会持续更长的模型，而零层屏障具有严重的超级冷却。我们说明了这些结果对未来重力波实验的含义。
We survey systematically the general parametrisations of particle-physics models for a first-order phase transition in the early universe, including models with polynomial potentials both with and without barriers at zero temperature, and Coleman-Weinberg-like models with potentials that are classically scale-invariant. We distinguish three possibilities for the transition - detonations, deflagrations and hybrids - and consider sound waves and turbulent mechanisms for generating gravitational waves during the transitions in these models, checking in each case the requirement for successful percolation. We argue that in models without a zero-temperature barrier and in scale-invariant models the period during which sound waves generate gravitational waves lasts only for a fraction of a Hubble time after a generic first-order cosmological phase transition, whereas it may last longer in some models with a zero-temperature barrier that feature severe supercooling. We illustrate the implications of these results for future gravitational-wave experiments.
