From Quarks and Gluons to Hadrons: Chiral Symmetry Breaking in Dynamical QCD
From Quarks and Gluons to Hadrons: Chiral Symmetry Breaking in Dynamical QCD
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DOI：
10.1103/physrevd.94.034016
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发表时间：
2014-12
影响因子：
5
通讯作者：
J. Braun;L. Fister;J. Pawlowski;F. Rennecke
中科院分区：
文献类型：
--
作者：
J. Braun;L. Fister;J. Pawlowski;F. Rennecke
我们对真空中双味QCD的动力学进行了分析。特别注意的是从高能夸克胶子制度的强子动力学控制的低能制度的转变。这是在一个功能的重整化群的方法来修正QCD动力学强子化技术。后者使我们能够方便地描述从微扰的高能量制度的非微扰的低能量限制，而不受微调模型参数的过渡。在目前的工作中，我们将这些技术应用到双味QCD与物理夸克质量，并显示如何从潜在的夸克胶子动力学的主导低能自由度的动态出现。
We present an analysis of the dynamics of two-flavour QCD in the vacuum. Special attention is payed to the transition from the high energy quark-gluon regime to the low energy regime governed by hadron dynamics. This is done within a functional renormalisation group approach to QCD amended by dynamical hadronisation techniques. The latter allow us to describe conveniently the transition from the perturbative high-energy regime to the nonperturbative low-energy limit without suffering from a fine-tuning of model parameters. In the present work, we apply these techniques to two-flavour QCD with physical quark masses and show how the dynamics of the dominant low-energy degrees of freedom emerge from the underlying quark-gluon dynamics.