标题： inflation宇宙学中的预热和再加热：教学性综述 显示英文标题

标题： Preheating and Reheating in Inflationary Cosmology: a pedagogical survey

摘要： 宇宙膨胀预热现象的最新进展回顾如下。 我们首先讨论了在参数放大初期，在马蒂厄和拉梅近似下，关于预热时间尺度和粒子产生的估计，并分析了它们的精确性和局限性。 强调了在能量守恒方案中包括场论方程非线性的自洽计算的必要性。 回顾了包括场反作用的大N计算。 对于自发破缺理论，分析了对称性恢复的问题。 提出了对称性恢复的可能性和判据的讨论。 显示英文摘要

摘要： Recent progress in the preheating phenomena for inflationary cosmology is reviewed. We first discuss estimates of the preheating time scale and particle production at the early stages of parametric amplification within the Mathieu and Lam'e approximations and we analyze their precision and limitations. The necessity of self-consistent calculations including the non-linearity of the field theory equations in an energy conserving scheme is stressed. The large N calculations including the field back-reaction are reviewed. For spontaneously broken theories the issue of symmetry restoration is analyzed. A discussion of the possibility and criterion for symmetry restoration is presented.