薛定谔泛函中的梯度流耦合
The gradient flow coupling in the Schrödinger Functional
摘要:
我们研究了薛定谔泛函中的Yang-Mills梯度流的微扰行为,包括在连续介质中的微扰行为和在晶格上的微扰行为。流场的能量密度用于限定在由有限体积箱的尺寸给定的尺度下的运行耦合。从我们的微扰计算中,我们估计的大小,这种耦合的截止效应的微扰理论中的领先秩序。在一组Nf=2的规范场系综在一个物理体积L ~ 0.4 fm,我们最终证明了一个精确的连续极限,由于适度的截止效应和高的统计精度的耦合的适用性。
英文摘要:
We study the perturbative behavior of the Yang-Mills gradient flow in the Schrödinger Functional, both in the continuum and on the lattice. The energy density of the flow field is used to define a running coupling at a scale given by the size of the finite volume box. From our perturbative computation we estimate the size of cutoff effects of this coupling to leading order in perturbation theory. On a set of Nf=2 gauge field ensembles in a physical volume of L ~ 0.4 fm we finally demonstrate the suitability of the coupling for a precise continuum limit due to modest cutoff effects and high statistical precision.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。