大n全息费米液体中的扩散和不稳定性：电子星的矢量涨落

IF 5.5 1区物理与天体物理 Q1 Physics and Astronomy

Journal of High Energy Physics Pub Date : 2025-10-16 DOI:10.1007/JHEP10(2025)152

Vladan Gecin, Mihailo Čubrović

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引用次数: 0

摘要

研究了AdS电子星在矢量扇区的流体动力响应，并计算了对偶场理论的相关函数和横向电导率。系统在低温和接近临界温度时表现出流体动力学行为，此时电子星经历了向RN黑洞的相变。然而，在中等温度下，流体力学不存在。值得注意的是，系统具有不稳定性，即在有限温度下，在正虚频率轴上有一个极点。这种不稳定性可以从解析论证和数值论证中发现。它的物理意义到目前为止还不清楚，但它可能意味着恒星的理想流体极限是一个假真空。

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Diffusion and instabilities in large-N holographic Fermi liquids: the vector fluctuations of the electron star

We study the hydrodynamic response of the AdS electron star in the vector sector, and compute the correlation functions and the transverse conductivity of the dual field theory. The system exhibits hydrodynamic behavior at low temperatures and near the critical temperature where the electron star undergoes the phase transition to the RN black hole. However, at intermediate temperatures the hydrodynamics does not exist. Remarkably, the system has an instability, i.e. a pole on the positive imaginary frequency axis at finite temperature. This instability is found both from analytical arguments and from numerics. Its physical meaning is so far unclear but it might mean that the ideal fluid limit for the star is a false vacuum.

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来源期刊

Journal of High Energy Physics 物理-物理：粒子与场物理

CiteScore

10.30

自引率

46.30%

发文量

2107

审稿时长

1.5 months

期刊介绍： The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal. Consequently, the Advisory and Editorial Boards, composed of distinguished, active scientists in the field, jointly establish with the Scientific Director the journal''s scientific policy and ensure the scientific quality of accepted articles. JHEP presently encompasses the following areas of theoretical and experimental physics: Collider Physics Underground and Large Array Physics Quantum Field Theory Gauge Field Theories Symmetries String and Brane Theory General Relativity and Gravitation Supersymmetry Mathematical Methods of Physics Mostly Solvable Models Astroparticles Statistical Field Theories Mostly Weak Interactions Mostly Strong Interactions Quantum Field Theory (phenomenology) Strings and Branes Phenomenological Aspects of Supersymmetry Mostly Strong Interactions (phenomenology).