Analytic calculation of field-strength correlators
arXiv:hep-ph/0501182 · doi:10.1134/S106377880603015X
Abstract
Field correlators are expressed using background field formalism through the gluelump Green's functions. The latter are obtained in the path integral and Hamiltonian formalism. As a result behaviour of field correlators is obtained at small and large distances both for perturbative and nonperturbative parts. The latter decay exponentially at large distances and are finite at x=0, in agreement with OPE and lattice data.
28 pages, no figures; new material added, misprints corrected
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