arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2403.06006hep-thgr-qcmath-phmath.MP
收藏

德西特热力学中的实时可观测量

Real-time observables in de Sitter thermodynamics

Manvir Grewal, Y. T. Albert Law

AI总结:

本文研究德西特静态补丁中任意质量自由标量场的实时有限温度关联函数,揭示 Matsubara 极点消失条件,建立 Harish-Chandra 特征标与谱函数的关系,并处理特殊非正质量及无质量情形的量子化。

摘要:

我们研究了任意维度 $dS_{d+1}$ 静态补丁中任意质量自由标量场的实时有限温度关联函数。我们证明,当逆温度是德西特逆温度的有理倍数时,对称 Wightman 函数的某些 Matsubara 极点会消失。在德西特温度下,我们明确展示了如何通过从球面 $S^{d+1}$ 的解析延拓获得所有洛伦兹热关联函数。我们建立了 $SO(1,d+1)$ 的 Harish-Chandra 特征标与积分谱函数之间的精确关系,为前者提供了新的动力学视角,并使其推广成为可能。此外,我们研究了具有特殊非正质量的标量场。我们为其特征标的独特结构提供了物理图像。对于无质量情形,我们进行了一致的静态补丁量子化,并找到了唯一能解析延拓到量子理论中关联函数的 $S^{d+1}$ 关联函数。

英文摘要:

We study real-time finite-temperature correlators for free scalars of any mass in a $dS_{d+1}$ static patch in any dimension. We show that whenever the inverse temperature is a rational multiple of the inverse de Sitter temperature, certain Matsubara poles of the symmetric Wightman function disappear. At the de Sitter temperature, we explicitly show how the Lorentzian thermal correlators can all be obtained by analytic continuations from the round $S^{d+1}$. We establish the precise relation between the Harish-Chandra character for $SO(1,d+1)$ and the integrated spectral function, providing a novel dynamical perspective on the former and enabling generalizations. Furthermore, we study scalars with exceptional non-positive masses. We provide a physical picture for the distinctive structures of their characters. For the massless case, we perform a consistent static patch quantization, and find the unique $S^{d+1}$ correlator that analytically continues to the correlators in the quantum theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑