The topological susceptibility in the large- N limit of SU( N ) Yang–Mills theory
The topological susceptibility in the large- N limit of SU( N ) Yang–Mills theory
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DOI：
10.1016/j.physletb.2016.09.029
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发表时间：
2016-07
影响因子：
4.4
通讯作者：
M. Cè;Miguel Garc'ia Vera;L. Giusti;S. Schaefer
中科院分区：
文献类型：
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作者：
M. Cè;Miguel Garc'ia Vera;L. Giusti;S. Schaefer
我们以百分之一的精度计算了SU (N) Yang-Mills理论在大N极限下的拓扑磁化率。这是通过测量N= 3,4,5,6的三个晶格间距值的磁化率的梯度流定义来实现的。由于参数空间的这种覆盖，我们可以有信心地将结果外推到大n和连续体极限。开放边界条件有助于在较大N的更细晶格上进行模拟。
We compute the topological susceptibility of the SU (N) Yang–Mills theory in the large-N limit with a percent level accuracy. This is achieved by measuring the gradient-flow definition of the susceptibility at three values of the lattice spacing for N= 3, 4, 5, 6. Thanks to this coverage of parameter space, we can extrapolate the results to the large-N and continuum limits with confidence. Open boundary conditions are instrumental to make simulations feasible on the finer lattices at the larger N.