Infrared asymptotics of gluon Green's functions in covariant gaugeстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:It is considered whether the singular infrared behavior D(k) ~ M^2/k^4 of the gluon propagator and the corresponding asymptotic behavior of the gluon vertices are compatible with the Schwinger-Dyson equation in a covariant gauge. For the investigated asymptotic behaviors, the two-loop terms most singular in the infrared region are calculated. It is shown that there exists a distinguished covariant gauge in which one can find a self-consistent description of the lowest gluon and ghost Green's functions in the infrared
region of QCD.