Abstract

The phase diagram of quantum chromodynamics under different external parameters, such as the temperature, baryon chemical potential, and magnetic field strength, is studied using the method of lattice supercomputer simulation. The calculations are carried out with three light quarks u, d, and s using an imaginary chemical potential. The results for real values of chemical potential μ are obtained by the method of analytic continuation. Using the renormalized chiral condensate and Polyakov loop, the positions (critical temperature) and widths of the confinement–deconfinement and chiral symmetry breaking–restoration phase transitions are determined as functions of the magnetic field and baryon density.

中文翻译：

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温度-重子密度-磁场参数空间中量子色动力学的相图

摘要

利用晶格超级计算机仿真方法研究了在不同外部参数（例如温度，重子化学势和磁场强度）下的量子色动力学相图。使用虚化学势，用三个光夸克u，d和s进行计算。化学势μ的实际值的结果是通过解析连续方法获得的。使用重新归一化的手性冷凝物和Polyakov环，确定了约束-解除约束和手性对称断裂-还原相变的位置（临界温度）和宽度，它们是磁场和重子密度的函数。