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arXiv 2501.17852hep-thcond-mat.stat-mechgr-qc
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有限密度系统中的全息涨落-耗散关系

Holographic Fluctuation-Dissipation Relations in Finite Density Systems

Shivam K. Sharma

AI总结:

本文利用实时全息术研究有限密度全息系统的涨落-耗散关系,开发了计算带电标量$n$点函数的Witten图框架,并在小有限密度下得出非线性全息涨落-耗散关系。

摘要:

我们使用实时全息术,研究了有限密度全息系统中的涨落-耗散关系。在体(bulk)中,这对应于研究带电标量场在带电黑洞背景上的散射,从而导出 AdS Reissner-Nordström 黑洞外部的场论。该理论捕捉了耗散(来自坠落的准正模)和涨落(来自 Hawking 辐射)。此外,我们还开发了一个 Witten 图框架,用于计算相互作用带电标量的 $n$ 点函数。从边界视角来看,它给出了保持在有限温度和有限化学势下的对偶 CFT 的实时关联。我们的结果在小但有限的密度下得出了(非)线性全息涨落-耗散关系,并表明这些关系在零密度极限下能恢复正确的行为。

英文摘要:

Using real-time holography, we investigate fluctuation-dissipation relations in holographic systems at finite density. In the bulk, it corresponds to the study of scattering of a charged scalar field against a charged black hole background, leading to an exterior field theory outside the AdS Reissner-Nordström black hole. This theory captures dissipation (from infalling Quasi-normal modes) and fluctuations (from Hawking radiation). Here, we also develop a Witten diagrammatic framework for computing $n$-point functions for interacting charged scalars. From the boundary perspective, it gives real-time correlations of the dual CFT held at finite temperature and finite chemical potential. Our results yield (non)-linear holographic fluctuation-dissipation relations at small but finite density, which are shown to recover the correct behaviour in the zero-density limit.

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。

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