QCD moat regime and its real-time properties

IF 5 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-05-16 DOI:10.1103/physrevd.111.094026

Wei-jie Fu, Jan M. Pawlowski, Robert D. Pisarski, Fabian Rennecke, Rui Wen, Shi Yin

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引用次数: 0

Abstract

Dense quantum chromodynamics (QCD) matter may exhibit crystalline phases. Their existence is reflected in a moat regime, where mesonic correlations feature spatial modulations. We study the real-time properties of pions at finite temperature and density in QCD in order to elucidate the nature of this regime. We show that the moat regime arises from particle-hole-like fluctuations near the Fermi surface. This gives rise to a characteristic peak in the spectral function of the pion at nonzero spacelike momentum. This peak can be interpreted as a new quasi particle, the moaton. In addition, our framework also allows us to directly test the stability of the homogeneous chiral phase against the formation of an inhomogeneous condensate in QCD. We find that an inhomogeneous instability is highly unlikely for baryon chemical potentials μB≤630MeV.

Published by the American Physical Society

2025

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QCD护城河体制及其实时性

致密量子色动力学（QCD）物质可能表现出结晶相。它们的存在反映在一个护城河状态中，其中介子相关具有空间调制特征。为了阐明这一机制的性质，我们研究了在有限温度和密度下的量子光盘中介子的实时性质。我们证明了护城河制度是由费米表面附近的粒子空穴波动产生的。这就产生了介子在非零类空间动量下的谱函数的特征峰。这个峰可以解释为一种新的准粒子，即运动子。此外，我们的框架还允许我们直接测试均匀手性相对QCD中不均匀凝聚物形成的稳定性。我们发现重子化学势μB≤630MeV时，不均匀不稳定性是极不可能的。2025年由美国物理学会出版

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.