Gluon Mass from Instantons

Abstract

The gluon propagator is calculated in the instanton background in a form appropriate for extracting the momentum dependent gluon mass. In background-$\xi$-gauge we get for the mass $400$MeV for small $p^2$ independent of the gauge parameter $\xi$.

Comments: 13 pages, macros (axodraw.sty, epsf.sty) are included in part 2 (figures) Identical resubmission because of some transfere-Errors caused by invisible characters.