Bound state properties from the functional renormalization group
Bound state properties from the functional renormalization group
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DOI：
10.1103/physrevd.99.054029
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发表时间：
2018-10
影响因子：
5
通讯作者：
R. Alkofer;A. Maas;W. Mian;M. Mitter;Jordi Par'is-L'opez;J. Pawlowski;Nicolas Wink
中科院分区：
文献类型：
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作者：
R. Alkofer;A. Maas;W. Mian;M. Mitter;Jordi Par'is-L'opez;J. Pawlowski;Nicolas Wink
我们讨论了一种方法，用于访问绑定状态的属性，如质量和衰变宽度，内的功能重整化群方法的理论。一个重要的基石是共振相互作用通道的动力学强子化技术。的一般框架内的两味夸克介子模型的例子和投入工作。这个模型提供了一个具有夸克和强子自由度的双味QCD动力学的低能描述。我们比较明确的相关函数和观测量的第一原理QCD结果在定量的方式。这使我们能够估计低能量有效模型的有效性范围。我们还提出了第一个结果极群众和衰变宽度。接下来的步骤涉及实时配方的功能renormalisation组进行了讨论。
We discuss an approach for accessing bound state properties, like mass and decay width, of a theory within the functional renormalisation group approach. An important cornerstone is the dynamical hadronization technique for resonant interaction channels. The general framework is exemplified and put to work within the two-flavour quark-meson model. This model provides a low-energy description of the dynamics of two-flavour QCD with quark and hadronic degrees of freedom. We compare explicitly the respective results for correlation functions and observables with first principle QCD results in a quantitative manner. This allows us to estimate the validity range of low energy effective models. We also present first results for pole masses and decay widths. Next steps involving real-time formulations of the functional renormalisation group are discussed.