The structure of a gluon string
Migdal A. B., Khokhlachev S. B.
An effective approximate Lagrangian, which makes it possible to derive equations for average gluon fields, is constructed on the basis of quantum chromodynamics. The field distribution in a gluon string that connects a quark and an antiquark is found. The gluoelectric field directed along the string is surrounded by a circular gluomagnetic field. The fields are localized in a region whose transverse dimension is on the order of the confinement radius. The tension coefficient of a string is estimated.