The N=2 vector-tensor multiplet, central charge superspace, and Chern-Simons couplings

摘要

We present a new, alternative interpretation of the vector-tenser multiplet as a two-form in central charge superspace. This approach provides a geometric description of the (nontrivial) central charge transformations ab initio and is naturally generalized to include couplings of Chern-Simons forms to the antisymmetric tensor gauge field, giving rise to a N = 2 supersymmetric version of the Green-Schwarz, anomaly cancellation mechanism. [References: 11]