Quasi-instantons in QCD with chiral symmetry restoration
Quasi-instantons in QCD with chiral symmetry restoration
复制标题
QCD 中的准瞬时与手性对称性恢复
DOI：
10.1103/physrevd.91.105015
复制
发表时间：
2015
影响因子：
5
通讯作者：
Naoki Yamamoto
中科院分区：
文献类型：
--
作者：
Takuya Kanazawa;Naoki Yamamoto
在不使用半经典近似的情况下，我们证明了在具有手征对称性恢复和对称性破缺的高温QCD中，足够轻的夸克的配分函数可以表示为服从Poisson统计的具有拓扑荷的非相互作用物体的系综.我们认为，拓扑对象是“准瞬子”（而不是裸瞬子）考虑到量子效应。我们的结果是有效的，甚至接近（伪）的手性相变的临界温度。
We show, without using semiclassical approximations, that, in high-temperature QCD with chiral symmetry restoration andsymmetry breaking, the partition function for sufficiently light quarks can be expressed as an ensemble of noninteracting objects with topological charge that obey the Poisson statistics. We argue that the topological objects are “quasi-instantons” (rather than bare instantons) taking into account quantum effects. Our result is valid even close to the (pseudo)critical temperature of the chiral phase transition.