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OPTIMIZED-VARIATIONAL QUARK MASS EXPANSION AND DYNAMICAL CHIRAL SYMMETRY BREAKDOWN

机译:优化 - 变分夸克大众膨胀与动态手性对称分解

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A recently proposed variational mass expansion approach to dynamical chiral symmetry breakdown is reviewed. We briefly explain how a specific integral ansato over the analytically continued, arbitrary Lagrangian mass parameter, resums the usual variationalmass expansion ("delta-expansion".) The construction is then generalized to obtain non-perturbative expressions for the order parameters of the SU(nj)x, X SU(nf)n breakdown (nj = 2 or 3), in QCD. Emphasis is put on some general aspects as well as possible limitations of this approach.
机译:综述了最近提出了动态手性对称性分解的变分别批量扩展方法。我们简要介绍了在分析上持续的,采用任意拉格朗日质量参数上的特定整数Ansato如何重建通常的变异散射膨胀(“三角洲扩展”。)概括地推广以获得SU的订单参数的非扰动表达式( nj)x,x su(nf)n击穿(nj = 2或3),qcd。重点是一些一般方面以及这种方法的可能局限性。

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