夸克-胶子等离子体EOS对具有反常磁矩的磁形变夸克星的作用
Cold Quark-Gluon Plasma EOS Applied to a Magnetically Deformed Quark Star with an Anomalous Magnetic Moment
摘要：
本文利用QCD冷等离子体激发的状态方程研究了反常磁矩（AMM）耦合和小形变对夸克星静态扁长核形状的影响。利用从高温低化学势夸克-胶子等离子体环境转移到低温高化学势夸克星核环境的Fogaça QCD激发的状态方程，我们考虑了在TOV方程中引入度规诱导形状形变参数的AMM耦合的影响.物态方程是利用胶子场张量的硬胶子和软胶子分解，使用胶子的平均场有效质量而开发的。AMM被认为是使用狄拉克自旋张量耦合到基于夸克味的磁矩的电磁场张量。形状参数被引入到一个代表扁圆和长扁静态恒星核心的修正TOV方程的度量分析中。这些方程的数值求解的最终质量和半径的国家代表的核心崩溃的大质量恒星的相变导致一个未绑定的夸克-胶子等离子体。我们发现，形状参数和AMM效应的组合可以改变耦合的EOS-TOV方程，导致最终质量的增加和最终赤道半径的减小，而不使核心坍缩成黑洞，也不违反因果关系约束，我们发现最大质量值在2.3太阳质量< M < 2.7太阳质量的范围内。这些状态与一些天体物理学的高质量磁星/脉冲星和重力波系统相一致，这些系统可能为经历了夸克-胶子相变的核心提供证据，如PSR 0943+10和GW 190814事件的次级。
英文摘要：
We consider a QCD cold plasma motivated Equation of State (EOS) to examine the impact of an Anomalous Magnetic Moment (AMM) coupling and small shape deformations for static oblate and prolate core shapes of quark stars. Using the Fogaça QCD motivated EOS which shifts from the high temperature low chemical potential quark gluon plasma environment to the low temperature high chemical potential quark stellar core environment we consider the impact of an AMM coupling with a metric induced shape deformation parameter in the TOV equations. The EOS is developed using a hard gluon and soft gluon decomposition of the gluon field tensor using a mean field effective mass for the gluons. The AMM is considered using the Dirac spin tensor coupled to the EM field tensor with quark flavor based magnetic moments. The shape parameter is introduced in a metric ansatz that represents oblate and prolate static stellar cores for modified TOV equations. These equations are numerically solved for the final mass and radius states representing the core collapse of a massive star with a phase transition leading to an unbound quark-gluon plasma. We find that the combined shape parameter and AMM effects can alter the coupled EOS-TOV equations resulting in an increase in the final mass and a decrease in the final equatorial radius without collapsing the core into a black hole and without violating causality constraints, we find maximum mass values in the range: 2.3 Solar Masses < M < 2.7 Solar Masses. These states are consistent with some astrophysical high mass magnetar/pulsar and gravity wave systems which may provide evidence for a core that has undergone a quark-gluon phase transition such as PSR 0943+10 and the secondary from the GW 190814 event.
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