标题： 大尺度结构有效场论中的三谱 显示英文标题

标题： The Trispectrum in the Effective Field Theory of Large Scale Structure

摘要： 我们计算了宇宙学密度扰动在一环阶标准扰动理论（SPT）和大尺度结构有效场论（LSS的EFT）中的四点连通关联函数（傅里叶空间中的四功率谱）。 本文是我们在物质功率谱非高斯协方差方面早期工作的补充，该协方差对应于四功率谱的特定波数配置。 在本次计算中，我们强调并澄清了在三阶扰动理论中对于四功率谱一般波数配置时EFT框架中出现的一些微妙方面。 我们一致地将涡旋和时间上的非局域性纳入EFT反项，并提出了应力张量的完整构建基底。 我们展示了关于一环SPT四功率谱和EFT贡献的预测，重点关注那些对于使用LSS约束原初非高斯性具有特殊意义的配置。 显示英文摘要

摘要： We compute the connected four point correlation function (the trispectrum in Fourier space) of cosmological density perturbations at one-loop order in Standard Perturbation Theory (SPT) and the Effective Field Theory of Large Scale Structure (EFT of LSS). This paper is a companion to our earlier work on the non-Gaussian covariance of the matter power spectrum, which corresponds to a particular wavenumber configuration of the trispectrum. In the present calculation, we highlight and clarify some of the subtle aspects of the EFT framework that arise at third order in perturbation theory for general wavenumber configurations of the trispectrum. We consistently incorporate vorticity and non-locality in time into the EFT counterterms and lay out a complete basis of building blocks for the stress tensor. We show predictions for the one-loop SPT trispectrum and the EFT contributions, focusing on configurations which have particular relevance for using LSS to constrain primordial non-Gaussianity.