郑州大学李志镔团队研究了带临界点的热密量子光盘全息模型重述。该项研究成果发表在2025年6月24日出版的《高能物理杂志》上。
为了对热和致密QCD物质提供可靠的定量预测，必须校准全息模型，以匹配重子化学势消失时的第一性原理晶格结果。来自两个主要晶格群HotQCD和Wuppertal-Budapest（WB）协作的状态方程在高温下表现出显著差异。
研究组重新审视了具有2+1味和物理夸克质量的热QCD的Einstein-Maxwell-dilaton（EMD）全息模型，拟合了WB合作的晶格QCD数据。特别是，使用他们之前工作[Phys.Rev.D 106（2022）L121902]中标量势和规范耦合的参数化，实现了状态方程、手性凝聚体和最新晶格结果之间的定量一致性。
此外，高阶重子数磁化率与2+1+1味QCD的磁化率一致。特别是，从WB协作数据中获得的关键终点（CEP）与HotQCD和WB数据集的组合非常匹配，突显了CEP位置的稳健性。研究组对CEP位置的全息预测也与最近对多个EMD模型的贝叶斯分析以及从间隙方程到QCD的有效潜在方法相一致。
附：英文原文
Title: Revisiting holographic model for thermal and dense QCD with a critical point
Author: Fu, Qingxuan, He, Song, Li, Li, Li, Zhibin
Issue&Volume: 2025-06-24
Abstract: To provide reliable quantitative predictions for hot and dense QCD matter, a holographic model must be calibrated to match first-principles lattice results at vanishing baryon chemical potential. The equation of state from two leading lattice groups, HotQCD and the Wuppertal-Budapest (WB) collaboration, exhibits notable differences at high temperatures. We revisit the Einstein-Maxwell-dilaton (EMD) holographic model for hot QCD with 2+1 flavors and physical quark masses, fitting the lattice QCD data from the WB collaboration. In particular, using the parameterization for the scalar potential and gauge coupling from our previous work [Phys. Rev. D 106 (2022) L121902], we achieve quantitative agreement between the equation of state, chiral condensates, and state-of-the-art lattice results. Furthermore, higher-order baryon number susceptibilities are consistent with those for 2+1+1 flavor QCD. In particular, the critical endpoint (CEP) obtained from the WB collaboration data closely matches that from the combination of HotQCD and WB datasets, highlighting the robustness of the CEP location. Our holographic prediction for the location of the CEP also aligns with recent Bayesian analysis of multiple EMD models and an effective potential approach to QCD from gap equations.
DOI: 10.1007/JHEP06(2025)221
Source: https://link.springer.com/article/10.1007/JHEP06(2025)221