奇异夸克星结构计算中夸克动力学质量的影响
The effect of dynamical quark mass in the calculation of strange quark star structure
摘要：
讨论了奇异夸克物质组分的动力学行为，特别是密度相关夸克质量对奇异夸克物质状态方程的影响。在Nambu-Jona-Lasinio（NJL）模型中计算了夸克的动力学质量，然后利用这些动力学质量，用MIT袋模型计算了奇异夸克物质。为了比较动力学质量相互作用和QCD夸克-夸克相互作用，我们在MIT袋模型中考虑了夸克间的有效相互作用为单胶子交换项。我们的动力学方法说明了一个改进的状态方程的值。我们还利用TOV方程研究了奇异夸克星的结构。我们的结果表明，动力学质量相互作用导致较低的值的引力质量。
英文摘要：
We have discussed dynamical behavior of strange quark matter components, in particular the effects of density dependent quark mass on the equation of state of strange quark matter. Dynamical masses of quarks have been computed within Nambu-Jona-Lasinio (NJL) model, then we have done the strange quark matter calculations employing the MIT bag model with these dynamical masses. For the sake of comparing dynamical mass interaction with QCD quark-quark interaction, we have considered the one-gluon-exchange term as the effective interaction between quarks for MIT bag model. Our dynamical approach illustrates an improvement for the obtained values of equation of state. We have also investigated the structure of strange quark star using Tolman-Oppenheimer-Volkoff (TOV) equations for all applied models. Our results show that the dynamical mass interaction leads to lower values for the gravitational mass.
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