Eichtheorien mit einem Flavour dynamischer Fermionen

具有动态费米子风味的规范理论

• 批准号: 112372954
• 负责人: Professor Dr. Gernot Münster
• 金额: --
• 依托单位: Institut für Theoretische Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/112372954?language=en
• 关键词: Eichtheorien; mit; einem; Flavour; dynamischer

In this project gauge theories with a single flavour of dynamical fermions are investigated. This includes Quantum Chromodynamics (QCD) with one quark flavour and supersymmetric Yang-Mills theory with a gluino. The numerical treatment of a single fermion flavour is essentially different from the treatment of a doublet with degenerate masses. In particular the quark determinant of a single fermion flavour can become negative. It is expected that at vanishing quark mass a singularity occurs and at negative quark masses the CP symmetry of the groundstate is broken spontaneously. In our project we investigate the properties of QCD with one flavour and its relation to supersymmetric Yang-Mills theory numerically. This involves the singularity, the sign effect of the fermion determinant and the spectrum of low-lying hadron states.

在这个项目中，研究了具有单一风味的动力费米子的规范理论。这包括单夸克味的量子色动力学（QCD）和带有胶子的超对称杨-米尔斯理论。单个费米子的数值处理与具有简并质量的双重态的数值处理在本质上是不同的。特别是单个费米子风味的夸克行列式可以变为负的。预计在消失的夸克质量下会出现奇点，而在负夸克质量下基态的CP对称性会自发地被打破。在我们的项目中，我们用数值方法研究了单味QCD的性质及其与超对称杨-米尔斯理论的关系。这涉及到奇点、费米子行列式的符号效应和低洼强子态的谱。

项目成果

Towards the spectrum of low-lying particles in supersymmetric Yang-Mills theory

超对称杨-米尔斯理论中的低位粒子能谱

• DOI: 10.1007/jhep11(2013)061
• 发表时间: 2013
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: G. Bergner;I. Montvay;G. Münster;U. D. Özugurel;D. Sandbrink
• 通讯作者: D. Sandbrink

The gluino-glue particle and finite size effects in supersymmetric Yang-Mills theory

超对称杨-米尔斯理论中的胶胶粒子和有限尺寸效应

• DOI: 10.1007/jhep09(2012)108
• 发表时间: 2012
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: G. Bergner;T. Berheide;I. Montvay;G. Münster;U. D. Özugurel;D. Sandbrink
• 通讯作者: D. Sandbrink