标题： 高温淬火QCD中的自由校正气体 显示英文标题

标题： Free caloron gas in high temperature quenched QCD

摘要： 在有限温度相变到夸克-胶子等离子体的过程中，QCD拓扑易感性急剧下降。因此，在高温相中，剩余的拓扑对象（可能是instanton-caloron）形成了一个弱相互作用的稀疏气体。重叠Dirac算符通过其精确的零模允许测量净拓扑电荷。我们证明，单独地，正负拓扑对象的数量也可以从重叠Dirac谱的低端提取出来。我们发现，在相变稍高处，它们的数量分布已经与非相互作用拓扑对象的理想气体一致。 显示英文摘要

摘要： Across the finite temperature transition to the quark-gluon plasma, the QCD topological susceptibility decreases sharply. Thus in the high temperature phase the remaining topological objects (possibly calorons) form a weakly interacting dilute gas. The overlap Dirac operator, through its exact zero modes, allows one to measure the net topological charge. We show that separately the number of positively and negatively charged topological objects can also be extracted from the low end of the overlap Dirac spectrum. We find that slightly above the phase transition their number distributions are already consistent with an ideal gas of non-interacting topological objects.