论文标题
摄动QCD中磁化奇怪的夸克之星的结构
Structure of magnetized strange quark star in perturbative QCD
论文作者
论文摘要
我们已经执行了领先的扰动计算，以在磁场B = 10^18 g下在零温度下获得奇怪夸克物质（SQM）的状态方程（EOS）。因此，我们已经使用所获得的EOS计算磁化奇怪的Quark Star（SQS）的最大重力质量和相应的半径。我们采用了两种方法，包括常规扰动理论（RPT）和背景扰动理论（BPT）。在RPT中，耦合常数的红外（IR）冻结效应尚未考虑，而该效果已包括在BPT中。我们获得的最大重力质量值是太阳能质量的三倍以上。还研究了SQS的各向同性结构计算的有效性。我们的结果表明，各向异性方法的阈值磁场开始在2*10^18G <b <3*10^18G的间隔中显着。此外，我们已经计算了SQS的红移，紧凑性和Buchdahl-Bondi结合，以表明这种紧凑的对象不能是黑洞。
We have performed the leading order perturbative calculation to obtain the equation of state (EoS) of the strange quark matter (SQM) at zero temperature under the magnetic field B = 10^18 G. The SQM comprises two massless quark flavors (up and down) and one massive quark flavor(strange). Consequently, we have used the obtained EoS to calculate the maximum gravitational mass and the corresponding radius of the magnetized strange quark star (SQS). We have employed two approaches, including the regular perturbation theory (RPT) and the background perturbation theory (BPT). In RPT the infrared (IR) freezing effect of the coupling constant has not been accounted for, while this effect has been included in BPT. We have obtained the value of the maximum gravitational mass to be more than three times the solar mass. The validity of isotropic structure calculations for SQS has also been investigated. Our results show that the threshold magnetic field from which an anisotropic approach begins to be significant lies in the interval 2*10^18G < B < 3*10^18G. Furthermore, we have computed the redshift, compactness and Buchdahl-Bondi bound of the SQS to show that this compact object cannot be a black hole.
