How tightly is the nuclear symmetry energy constrained by a unitary Fermi gas?

被引：53

作者：

Zhang, Nai-Bo ^{[1
,2
]}

Cai, Bao-Jun ^{[1
,3
,4
]}

Li, Bao-An ^{[1
]}

Newton, William G. ^{[1
]}

Xu, Jun ^{[5
]}

机构：

[1] Texas A&M Univ Commerce, Dept Phys & Astron, Commerce, TX 75429 USA

[2] Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China

[3] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China

[4] Shanghai Jiao Tong Univ, Shanghai Key Lab Particle Phys & Cosmol, Dept Phys & Astron, Shanghai 200240, Peoples R China

[5] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

来源：

NUCLEAR SCIENCE AND TECHNIQUES | 2017年 / 28卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Symmetry energy; Unitary gas; Equation of state; Nuclear matter; HEAVY-ION COLLISIONS; MATTER INCOMPRESSIBILITY; ISOSPIN PHYSICS; EQUATION; DENSITY; MASSES; STARS; STATE;

D O I：

10.1007/s41365-017-0336-2

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

We examine critically how tightly the density dependence of nuclear symmetry energy E-sym(rho) is constrained by the universal equation of state of the unitary Fermi gas E-UG(rho) considering currently known uncertainties of higher order parameters describing the density dependence of the equation of state of isospin asymmetric nuclear matter. We found that E-UG(rho) does provide a useful lower boundary for the E-sym(rho). However, it does not tightly constrain the correlation between the magnitude E-sym(rho) and slope L unless the curvature K-sym of the symmetry energy at saturation density rho(0) is more precisely known. The large uncertainty in the skewness parameters affects the E-sym(rho) versus L correlation by the same almost as significantly as the uncertainty in K-sym.

引用

页数：7

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