Jmf. Labastida et M. Marino, TWISTED N=2 SUPERSYMMETRY WITH CENTRAL CHARGE AND EQUIVARIANT COHOMOLOGY, Communications in Mathematical Physics, 185(1), 1997, pp. 37-71
We present an equivariant extension of the Them form with respect to a
vector field action, in the framework of the Mathai-Quillen formalism
, The associated Topological Quantum Field Theories correspond to twis
ted N = 2 supersymmetric theories with a central charge. We analyze in
detail two different cases: topological sigma models and non-abelian
monopoles on four-manifolds.