Analytic calculation of field-strength correlators
نویسندگان
چکیده
منابع مشابه
5 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 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...
متن کاملAnalytic 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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Gauge invariant correlators in QCD are studied on the lattice. A systematic determination of the correlation lengths for gluon field strength correlators and quark correlators is made. The measurement of the gluon and quark condensates is discussed.
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We study by numerical simulations on a lattice the behaviour of the gauge–invariant two– point correlation functions of the gauge–field strengths across the deconfinement phase transition, both for the pure–gauge SU(3) theory and for full QCD with two flavours. Quenched data agree within errors with previous determinations, but have much higher statistics. A best–fit analysis of the data has be...
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We review the string representations of Abelian-projected SU(2)-and SU(3)-gauge theories and their application to the evaluation of bilocal field strength correlators. The large distance asymptotic behaviours of the latter ones are shown to be in agreement with the Stochastic Vacuum Model of QCD and existing lattice data.
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ژورنال
عنوان ژورنال: Physics of Atomic Nuclei
سال: 2006
ISSN: 1063-7788,1562-692X
DOI: 10.1134/s106377880603015x