Manifest covariance and the Hamiltonian approach to mass gap in (2+1)-dimensional Yang-Mills theory

Abstract

In earlier work we have given a Hamiltonian analysis of Yang-Mills theory in (2+1) dimensions showing how a mass gap could arise. In this paper, generalizing and covariantizing from the mass term in the Hamiltonian analysis, we obtain two manifestly covariant and gauge-invariant mass terms which can be used in a resummation of standard perturbation theory to study properties of the mass gap.

Comments: Sections 1, 4 modified, part of section 2 moved to appendix, 19 pages, LaTex