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arXiv 2004.04138hep-phnucl-th
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强磁场中的解禁闭

Deconfinement in the presence of a strong magnetic field

Pok Man Lo, Michal Szymanski, Chihiro Sasaki, Krzysztof Redlich

摘要:

通过计算Polyakov环的涨落,研究了有限磁场对重夸克解除禁闭相变的影响。结果表明,显式Z(3)破缺场随磁场增大而增大,导致(伪)临界温度降低,相图中一级区域缩小.给出了描述强、弱磁场下有质量和无质量夸克Z(3)破缺场行为的唯象方程。最后,我们探讨了动态轻夸克的情况下,并演示了如何改进的组分夸克质量函数可以强制执行正确的磁场依赖的有效模型中的退禁闭温度,观察到在格点量子色动力学计算。

英文摘要:

We study the impact of a finite magnetic field on the deconfinement phase transition for heavy quarks by computing the fluctuations of the Polyakov loops. It is demonstrated that the explicit Z(3) breaking field increases with the magnetic field, leading to a decrease in the (pseudo) critical temperatures and a shrinking first-order region in the phase diagram. Phenomenological equations that capture the behaviors of the Z(3) breaking field at strong and weak magnetic fields for massive and massless quarks are given. Lastly, we explore the case of dynamical light quarks and demonstrate how an improved constituent quark mass function can enforce the correct magnetic field dependence of the deconfinement temperature in an effective model, as observed in Lattice QCD calculations.

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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