论文标题
大规模结构的有效野外理论
Effective Field Theory for Large Scale Structure
论文作者
论文摘要
本章是对大规模结构的有效领域理论的非专家简介。首先，我们给出了一个详细的教学解释，说明为什么先前试图构建非线性宇宙学扰动理论的尝试失败了。之后，我们介绍了将暗物质作为有效的非理想液的描述，并展示了它如何纠正先前方法的缺点。最后，我们从非平衡场理论的观点（称为时间切片的扰动理论）开发了大规模结构的有效场理论的表述。我们展示了如何将该框架用于宇宙相关函数的一致重新归一化以及与巴里昂声学振荡相关的大型红外效应的系统重新调整。
This chapter is a non-expert introduction to the effective field theory of large scale structure. First, we give a detailed pedagogical explanation of why previous attempts to build non-linear cosmological perturbation theory failed. After that we introduce the description of dark matter as an effective non-ideal fluid and show how it corrects the shortcomings of the previous approaches. Finally, we develop a formulation of the effective field theory of large-scale structure from a nonequilibrium field theory perspective, called time-sliced perturbation theory. We show how this framework can be used for a consistent renormalization of cosmological correlation functions and a systematic resummation of large infrared effects relevant for the baryon acoustic oscillations.
