5 Analytic calculation of field - strength correlators
نویسنده
چکیده
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.
منابع مشابه
Analytic Calculation of Field-strength Correlators
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 D and D 1 is obtained at small and large distances both for perturbative and nonperturbative parts. Nonperturbative D(x) and D 1 (x) decay exponentially at large distances and a...
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