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.
Cè, M., García Vera, M., Giusti, L., Schaefer, S. (2016). The topological susceptibility in the large-N limit of SU(N) Yang–Mills theory. PHYSICS LETTERS. SECTION B, 762, 232-236 [10.1016/j.physletb.2016.09.029].
The topological susceptibility in the large-N limit of SU(N) Yang–Mills theory
Cè, M;Giusti, L;
2016
Abstract
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.
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