宇宙学粒子产生的超绝热基础：在预热中的应用
Superadiabatic basis in cosmological particle production: application to preheating
摘要：
讨论了含时背景中粒子数的绝热基依赖性。特别是，我们专注于通货膨胀后的预热，并表明，对于最佳的基础，所产生的粒子数的时间依赖性可以很好地近似由一个简单的连接公式，它可以通过分析斯托克斯现象在给定的背景下。正如我们明确表明，简单的连接公式可以描述各种参数区域，如窄和宽的共振区在一个统一的方式。
英文摘要：
We discuss the adiabatic basis dependence of particle number in time-dependent backgrounds. In particular, we focus on preheating after inflation, and show that, for the optimal basis, the time dependence of the produced particle number can be well approximated by a simple connection formula, which can be obtained by analysing Stokes phenomenon in given backgrounds. As we show explicitly, the simple connection formula can describe various parameter regions such as narrow and broad resonance regime in a unified manner.
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