Integrability of generalized structures on odd exact Courant algebroids using generalized connections

Abstract

Odd exact Courant algebroids constitute a simple class of transitive Courant algebroids. Their underlying vector bundle is of odd rank and differs from a generalized tangent bundle by the addition of a line bundle. In this article we study natural analogues of almost complex and almost pseudo-Hermitian structures on such Courant algebroids, which are called B_n-generalized almost complex/pseudo-Hermitian structures. The corresponding integrable structures are known as B_n-generalized complex structures and B_n-generalized pseudo-K\"{a}hler structures, respectively. We characterize the integrability of B_n-generalized almost complex/pseudo-Hermitian structures on odd exact Courant algebroids in terms of existence of adapted generalized connections. We describe the affine spaces of adapted generalized connections for such integrable generalized structures.