Projective limits in Euclidean quantum field theory, II: Abelian gauge theory

TL;DR

This paper develops two methods to construct continuum and thermodynamic limits of Abelian gauge theories using projective systems and infinite-dimensional measures, resulting in a massless lattice model.

Contribution

It introduces novel constructions of Abelian gauge theories' limits using projective systems and infinite-dimensional measures, extending previous approaches.

Findings

Constructed continuum and thermodynamic limits of Abelian gauge theories.

Developed a massless Abelian gauge model on an infinite cubical lattice.

Provided new mathematical frameworks for gauge theory limits.

Abstract

We present two constructions of continuum and thermodynamic limits of Abelian polyhedral gauge theories in arbitrary spacetime dimension. The first construction relies on the existence of projective systems of heat kernel measures, while the second involves an infinite dimensional heat kernel measure defined using projective limit of Hilbert spaces. As a special case, we obtain a model of Abelian gauge theory on the infinite cubical lattice, which, in contrast to the standard one, is massless for arbitrary values of the coupling parameter.