论文标题
带有一个Dirac重叠费米的伴随QCD的晶格模拟
Lattice simulations of adjoint QCD with one Dirac overlap fermion
论文作者
论文摘要
在这项工作中，我们研究了阳米尔斯理论的红外行为，并在量规组的伴随表示中耦合到无质量的福利（2）。该模型具有许多有趣的属性，对应于没有标量的$ \ MATHCAL {N} = 2 $ SUPER-YANG-MILLS理论，近年来，人们越来越有兴趣了解限制和费米式凝结是否在低能量下发生。我们使用费米昂动作的重叠离散化对晶格上的理论进行了模拟，从而可以精确而清晰地研究手性对称性破坏模式和费米昂冷凝物。我们介绍了尺度设置，凝结物和耦合常数通过梯度流的结果 - 所有这些都指向一个没有红外固定点的理论，并依赖于红外策略深处。
In this work we investigate the infrared behaviour of a Yang-Mills theory coupled to a massless fermion in the adjoint representation of the gauge group SU(2). This model has many interesting properties, corresponding to the $\mathcal{N}=2$ Super-Yang-Mills theory without scalars and in the recent years there has been an increasing interest toward understanding whether confinement and fermion condensation occur at low energy. We simulate the theory on the lattice close to the massless limit using the overlap discretization of the fermion action, allowing a precise and clean study of the chiral symmetry breaking pattern and of the fermion condensate. We present results for the scale setting, the condensate and the running of the coupling constant through the gradient flow -- all of them pointing to a theory without an infrared fixed point and remaining confined deep in the infrared regime.
