Liquid-gas phase transition in nuclear matter including strangeness

被引：16
|
作者：
Wang, P [1 ]
Leinweber, DB
Thomas, AW
Williams, AG
机构：
[1] Univ Adelaide, Special Res Ctr Subatom Struct Matter, CSSM, Adelaide, SA 5005, Australia
[2] Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia
[3] Jefferson Lab, Newport News, VA 23606 USA
来源：
PHYSICAL REVIEW C | 2004年 / 70卷 / 05期
基金：
澳大利亚研究理事会;
关键词：
D O I：
10.1103/PhysRevC.70.055204
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 apply the chiral SU(3) quark mean field model to study the properties of strange hadronic matter at finite temperature. The liquid-gas phase transition is studied as a function of the strangeness fraction. The pressure of the system cannot remain constant during the phase transition, since there are two independent conserved charges (baryon and strangeness number). In a range of temperatures around 15 MeV (precise values depending on the model used) the equation of state exhibits multiple bifurcates. The difference in the strangeness fraction f(s) between the liquid and gas phases is small when they coexist. The critical temperature of strange matter turns out to be a nontrivial function of the strangeness fraction.
引用
收藏
页码：055204 / 1
页数：8
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