通过夸克相互作用的离域恢复手征临界端点
Recovering the chiral critical end-point via delocalization of quark interactions
摘要：
我们表明，对于较低的分支的夸克凝聚和值高于约$-(250 \, \mathrm{MeV})^3$的手征临界端点在Nambu-Jona-Lasinio模型不发生在相图中。通过利用晶格激发的非定域夸克相互作用，我们证明了临界端点是可以恢复的。我们研究了这种行为的冷凝值的范围内，并发现在临界端点的位置的变化是更明显的冷凝物的增加。
英文摘要：
We show that for the lower branch of the quark condensate and values higher than approximately $-(250 \, \mathrm{MeV})^3$ the chiral critical end-point in the Nambu--Jona-Lasinio model does not occur in the phase diagram. By using lattice motivated non-local quark interactions, we demonstrate that the critical end-point can be recovered. We study this behavior for a range of condensate values and find that the variation in the position of the critical end-point is more pronounced as the condensate is increased.
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