Confinement and Mass Gap in Abelian Gauge

Details Confinement and Mass Gap in Abelian Gauge Confinement and Mass Gap in Abelian Gauge

2002-11-04

arxiv.org/abs/hep-th/0211014v2

Eur.Phys.J.C28:415-424,2003

Physics

High Energy Physics

High Energy Physics - Theory

Explanations added, to appear in Eur. Phys. J. C

Scientific paper

10.1140/epjc/s2003-01170-0

First, we present a simple confining abelian pure gauge theory. Classically, its kinetic term is not positive definite, and it contains a simple UV regularized F^4 interaction. This provoques the formation of a condensate ~ F^2 such that, at the saddle point of the effective potential, the wave function normalization constant of the abelian gauge fields vanishes exactly. Then we study SU(2) pure Yang-Mills theory in an abelian gauge and introduce an additional auxiliary field for a BRST invariant condensate of dimension 2, which renders the charged sector massive. Under simple assumptions its effective low energy theory reduces to the confining abelian model discussed before, and the vev of rho is seen to scale correctly with the renormalization point. Under these assumptions, the confinement condition Z_eff = 0 also holds for the massive charged sector, which suppresses the couplings of the charged fields to the abelian gauge bosons in the infrared regime.

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