A Massive Renormalizable Abelian Gauge Theory in 2+1 Dimensions

Details A Massive Renormalizable Abelian Gauge Theory in 2+1 Dimensions A Massive Renormalizable Abelian Gauge Theory in 2+1 Dimensions

1995-02-13

arxiv.org/abs/hep-th/9502075v2

Phys.Rev. D52 (1995) 4668-4674

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX, 17 pages, expanded reference list and discussion of relationship to previous work

Scientific paper

10.1103/PhysRevD.52.4668

The standard formulation of a massive Abelian vector field in $2+1$ dimensions involves a Maxwell kinetic term plus a Chern-Simons mass term; in its place we consider a Chern-Simons kinetic term plus a Stuekelberg mass term. In this latter model, we still have a massive vector field, but now the interaction with a charged spinor field is renormalizable (as opposed to super renormalizable). By choosing an appropriate gauge fixing term, the Stuekelberg auxiliary scalar field decouples from the vector field. The one-loop spinor self energy is computed using operator regularization, a technique which respects the three dimensional character of the antisymmetric tensor $\epsilon_{\alpha\beta\gamma}$. This method is used to evaluate the vector self energy to two-loop order; it is found to vanish showing that the beta function is zero to two-loop order. The canonical structure of the model is examined using the Dirac constraint formalism.

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