Nonlocal field correlators on the lattice in HP^1 sigma-model
arXiv:0906.1340 · doi:10.1134/S002136400914001X
Abstract
Connected two-point field strength correlators have been measured on the lattice in quaternionic projective sigma-model of pure SU(2) Yang-Mills theory. The correlation lengths, extracted from the exponential fit for these correlators, are found to be lambda_1^{-1} = 1.40(3) GeV and lambda^{-1} = 1.51(3) GeV in good agreement with other existing calculations. The dependence of bilocal functions on the connector shape was studied.
11 pages, 9 figures, to be published in JETP Letters