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arXiv 1107.5263hep-phhep-th
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库仑规范中哈密顿量QCD的手征对称性破缺

Chiral symmetry breaking in Hamiltonian QCD in Coulomb gauge

Markus Pak, Hugo Reinhardt

摘要:

用量子色动力学的哈密顿方法研究了库仑规范中手征对称性的自发破缺。夸克波泛函由变分原理确定,它使用的是一种超越了通常使用的BCS型波泛函的方法,并且包含了夸克与横向空间胶子的耦合。使用格点胶子传播子作为输入,它示出的夸克的低能量手征性质,如夸克凝聚体和组分夸克质量,大大增加了夸克的空间胶子耦合。我们的结果与唯象值相比,毫不逊色。

英文摘要:

Spontaneous breaking of chiral symmetry is investigated in the Hamiltonian approach to QCD in Coulomb gauge. The quark wave functional is determined by the variational principle using an ansatz which goes beyond the commonly used BCS-type of wave functionals and includes the coupling of the quarks to the transversal spatial gluons. Using the lattice gluon propagator as input it is shown that the low energy chiral properties of the quarks, like the quark condensate and the constituent quark mass, are substantially increased by the coupling of the quarks to the spatial gluons. Our results compare favourably with the phenomenological values.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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