Effects of thermal fluctuations on thermal inflation
Effects of thermal fluctuations on thermal inflation
复制标题
热涨落对热膨胀的影响
DOI：
10.1088/1475-7516/2015/03/024
复制
发表时间：
2015
影响因子：
6.4
通讯作者：
and Jun'ichi Yokoyama
中科院分区：
文献类型：
--
作者：
Takashi Hiramatsu;Yuhei Miyamoto;and Jun'ichi Yokoyama
热膨胀的机制是原始膨胀之后相对较短的加速膨胀，如果它们不想与早期宇宙的宇宙学发生冲突，那么它是某类粒子物理模型的理想成分。虽然热膨胀是最简单地描述在热有效势，热环境也会引起热波动，必须考虑。我们数值研究这些热波动的影响，使用晶格模拟。我们的结论是，虽然他们不破坏热膨胀的情况下，相变在热膨胀的最后通过相混合进行，因此没有伴随着气泡的形成，也没有明显的引力波振幅。
The mechanism of thermal inflation, a relatively short period of accelerated expansion after primordial inflation, is a desirable ingredient for a certain class of particle physics models if they are not to be in contention with the cosmology of the early Universe. Though thermal inflation is most simply described in terms of a thermal effective potential, a thermal environment also gives rise to thermal fluctuations that must be taken into account. We numerically study the effects of these thermal fluctuations using lattice simulations. We conclude that though they do not ruin the thermal inflation scenario, the phase transition at the end of thermal inflation proceeds through phase mixing and is therefore not accompanied by the formations of bubbles nor appreciable amplitude of gravitational waves.