外部色磁场中物理点的(2+1)味 QCD

Paolo Cea, Leonardo Cosmai
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引用次数: 0

摘要

我们研究了存在均匀阿贝尔色磁背景场的物理点上具有 (2+1)-HISQ 费米子味道的全 QCD。我们的研究重点是伪临界温度附近的重正化光怪手性凝聚态。我们发现,在约束区,量规系统受到色磁催化作用的影响,而在高温区,这种催化作用转变为反催化作用。我们进一步观察到,手性共轭物受到所谓的热滞后影响。我们对去抵消温度的估计表明,临界温度在小磁场区开始下降,不久之后似乎达到饱和,最后随着色磁场强度的增加而升高。
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QCD with (2+1) flavors at the physical point in external chromomagnetic fields
We investigate full QCD with (2+1)-flavour of HISQ fermions at the physical point in the presence of uniform Abelian chromomagnetic background fields. Our focus is on the renormalized light and strange chiral condensate around the pseudo-critical temperature. We find that in the confined region the gauge system is subjected to the chromomagnetic catalysis that turns into the inverse catalysis in the high-temperature regime. We further observe that the chiral condensates are subjected to the so-called thermal hysteresis. Our estimate of the deconfinement temperature indicates that the critical temperature begins to decrease in the small field region, soon after it seems to saturate and finally increase with the strength of the chromomagnetic field.
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