van der Waals hadron resonance gas and QCD phase diagram

被引：14

作者：

Sarkar, Nachiketa ^{[1
]}

Ghosh, Premomoy ^{[1
]}

机构：

[1] HBNI, Variable Energy Cyclotron Ctr, 1-AF Bidhan Nagar, Kolkata 700064, India

来源：

PHYSICAL REVIEW C | 2018年 / 98卷 / 01期

关键词：

ENTROPY DENSITY RATIO; QUARK-GLUON PLASMA; QUANTUM CHROMODYNAMICS; TRANSPORT-COEFFICIENTS; SHEAR VISCOSITY; MATTER; COLLISIONS; THERMODYNAMICS; DECONFINEMENT; RESTORATION;

D O I：

10.1103/PhysRevC.98.014907

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：

Taking into account the recently developed van der Waals (VDW)-like equation of state (EoS) for grand canonical ensemble of fermions, the temperature-dependent profiles of normalized entropy density (s/T-3) and the ratio of shear viscosity and entropy density (eta/s) for hadron resonance gas have been evaluated. The VDW parameters, corresponding to interactions between (anti)baryons, have been obtained by contrasting lattice EoS for QCD matter at finite chemical potentials (mu(B)) and for T <= 160 MeV. The temperature- and chemical-potential-dependent study of s/T-3 and eta/s for hadron gas, by signaling onsets of first-order phase transition and crossover in the hadronic phase of QCD matter, helps in understanding the QCD phase diagram in the (T, mu(B)) plane. An estimation of probable location of critical point matches predictions from other recent studies.

引用

页数：9

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