Hadron resonance gas model with repulsive mean-field interactions: Specific heat, isothermal compressibility and speed of sound

被引：8

作者：

Pal, Somenath ^{[1
]}

Kadam, Guruprasad ^{[2
]}

Bhattacharyya, Abhijit ^{[1
]}

机构：

[1] Univ Calcutta, Dept Phys, 92 APC Rd, Kolkata 700009, India

[2] HBNI, Natl Inst Sci Educ & Res Bhubaneswar, Sch Phys Sci, Jatni 752050, Odisha, India

来源：

NUCLEAR PHYSICS A | 2022年 / 1023卷

关键词：

Heavy ion collisions; HRG; DECONFINING PHASE-TRANSITION; NUCLEUS-NUCLEUS COLLISIONS; QUARK-MESON MODEL; ION COLLISIONS; QCD; THERMODYNAMICS; EQUILIBRATION; FLUCTUATIONS; RATIOS; MATTER;

D O I：

10.1016/j.nuclphysa.2022.122464

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We investigate the effect of repulsive interaction between hadrons on the specific heat (CV ), isothermal compressibility (kappa(T)) and the speed of sound (C-s(2)) of hot and dense hadronic matter. The repulsive inter-actions are included through a mean-field approach where the single particle energy picks correction term due to mean field interactions between hadrons. This correction term is proportional to the number density of hadrons. We assume different mean-field interactions for mesons and baryons. We also confront CV and C-s(2) with existing lattice QCD simulation results. We find that the repulsive interactions have very strong effect on CV and C-s(2) while its effect on kappa(T) is very mild. We finally discuss the implications of our results in the context of heavy-ion collision experiments. (C) 2022 Elsevier B.V. All rights reserved.

引用

页数：16

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