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arXiv 2209.02248hep-phnucl-th
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具有反常磁矩的磁化夸克物质的各向异性压力

Anisotropic pressure of magnetized quark matter with anomalous magnetic moment

Nilanjan Chaudhuri, Snigdha Ghosh, Pradip Roy, Sourav Sarkar

备注：
Version Published in Physical Review D
发表信息：
Physical Review D 106, 056020 (2022)
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摘要：

我们研究了磁场$(eB)$对组分夸克质量、强相互作用夸克物质的纵向和横向压力以及磁化强度和磁化率的影响。我们采用两味PolyakovNambu-Jona-Lasinio模型，在有限温度下引入夸克反常磁矩（AMM）$(T)$和有限夸克化学势$(μ_q)$，捕捉手征相变的不同阶段.我们发现当手征对称性破缺时，当$eB$值较大时，横向压力、磁化强度和磁化率会发生剧烈的振荡。然而，当手征对称性（部分）恢复时，在较高的$T$和$μ_q$值下振荡停止发生，并且即使在较小的$eB$值下，压力的各向异性性质也变得显著。由于夸克的AMM的包含导致反转磁催化的转变温度，我们观察到的横向压力，磁化强度和磁化率的变化显着修改的手征转变温度附近。此外，以上的手征转变温度的磁化率被发现保持积极的$eB$表示强相互作用的夸克物质的顺磁性字符的宽范围。最后，我们还研究了夸克相强相互作用物质的磁性。所得结果对研究重离子碰撞中产生的热致密物质的磁流体动力学演化有一定的参考价值。

英文摘要：

We investigate magnetic field $(eB)$ dependence of constituent quark mass, the longitudinal and transverse pressure as well as the magnetization and magnetic susceptibility of strongly interacting quark matter. We employ the two-flavour Polyakov Nambu--Jona-Lasinio model with the inclusion of the anomalous magnetic moment (AMM) of the quarks at finite temperature $(T)$ and finite quark chemical potential $(μ_q)$ capturing different stages of chiral phase transition. We find that the transverse pressure, magnetization and magnetic susceptibility become highly oscillatory for large values of $eB$ in the chiral symmetry broken phase. However the oscillations cease to occur at higher values of $T$ and $μ_q$ when chiral symmetry is (partially) restored and the anisotropic nature of the pressure becomes significant even at smaller values of $eB$. As the inclusion of AMM of the quarks leads to inverse magnetic catalysis of the transition temperature we observe that the variations of transverse pressure, magnetization and magnetic susceptibility are significantly modified in the vicinity of the chiral transition temperature. Furthermore, above the chiral transition temperature the magnetic susceptibility is found to remain positive for a wide range of $eB$ indicating a paramagnetic character of the strongly interacting quark matter. Finally, we have also examined the magnetism of strongly interacting matter in the quarkyonic phase. The obtained results could be useful for a magnetohydrodynamic evolution of hot and dense matter created in heavy-ion collisions.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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