Paper detail

Radiative Corrections in Vector-Tensor Models

We consider a two-form antisymmetric tensor field ϕminimally coupled to a non-abelian vector field with a field strength F. Canonical analysis suggests that a pseudoscalar mass term \frac{μ^2}{2} \tr (ϕ\wedge ϕ) for the tensor field eliminates degrees of freedom associated with this field. Explicit one loop calculations show that an additional coupling m\tr(ϕ\wedge F) (which can be eliminated classically by a tensor field shift) reintroduces tensor field degrees of freedom. We attribute this to the lack of the renormalizability in our vector-tensor model. We also explore a vector-tensor model with a tensor field scalar mass term \frac {μ^2}{2} \tr (ϕ\wedge\star ϕ) and coupling m\tr(ϕ\wedge \star F). We comment on the Stueckelberg mechanism for mass generation in the Abelian version of the latter model.