Modeling Hybrid Stars with an SU(3) non-linear sigma model
Modeling Hybrid Stars with an SU(3) non-linear sigma model
复制标题
使用 SU(3) 非线性 sigma 模型对混合星进行建模
DOI:
10.1103/physrevc.82.035803
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发表时间:
2010
影响因子:
3.1
通讯作者:
S. Schramm
中科院分区:
文献类型:
--
作者:
R. Negreiros;V. Dexheimer;S. Schramm
We study the behavior of hybrid stars by using an extended hadronic and quark SU(3) nonlinear sigma model. The degrees of freedom change naturally, in this model, from hadrons to quarks as the density/temperature increases. At zero temperature, we reproduce massive neutron stars, which contain cores of hybrid matter of 2 km for the nonrotating case and 1.18 and 0.87 km, in the equatorial and polar directions, respectively, for stars that rotate at the Kepler frequency (physical cases lie in between). The cooling of such stars is also analyzed.