密度依赖相互作用的强子共振气体模型：用于中子星和重离子碰撞
Hadron resonance gas with density-dependent interactions for neutron stars and heavy-ion collisions
- University of Houston（休斯顿大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
提出密度依赖的范德瓦尔斯强子共振气体模型（DD-HRG），统一描述重离子碰撞热物质和中子星冷致密物质，扩展因果性范围并支持两倍太阳质量恒星，改进格点QCD描述，已集成于Thermal-FIST软件。
AI中文摘要：
我们提出了范德瓦尔斯强子共振气体模型的一种密度依赖推广（DD-HRG），用于描述重离子碰撞中产生的热强子物质以及中子星内部的冷致密物质。非共振相互作用通过一个具有密度依赖可用体积分数的广义排除体积方案来纳入，并辅以任意密度依赖的平均场。通过由核物质经验性质约束的同位旋依赖相互作用参数，所得状态方程将因果性范围扩展到包括中子星内部，并支持两倍太阳质量的恒星。它还改进了在重子化学势为零时格点QCD热力学和守恒荷磁化率的描述，格点数据倾向于奇异重子之间排斥减弱。该DD-HRG框架可在开源软件Thermal-FIST的最新版本中获得。
英文摘要：
We present a density-dependent generalization of the van der Waals hadron resonance gas model (DD-HRG) for describing both the hot hadronic matter created in heavy-ion collisions and the cold, dense matter inside neutron stars. Non-resonant interactions are incorporated through a generalized excluded-volume prescription with a density-dependent available-volume fraction, supplemented by an arbitrary density-dependent mean field. With isospin-dependent interaction parameters constrained by empirical properties of nuclear matter, the resulting equation of state extends the causality range to include neutron-star interiors and supports two-solar-mass stars. It also improves the description of lattice QCD thermodynamics and conserved-charge susceptibilities at vanishing baryochemical potential, with lattice data favoring reduced repulsion among strange baryons. This DD-HRG framework is available within the latest version of the open-source Thermal-FIST package.
