Bianchi Identities for Non-Geometric Fluxes - From Quasi-Poisson   Structures to Courant Algebroids
  Starting from a (non-associative) quasi-Poisson structure, the derivation of a Roytenberg-type algebra is presented. From the Jacobi identities of the latter, the most general form of Bianchi identities for fluxes (H,f,Q,R) is then derived. It is also explained how this approach is related to the mathematical theory of quasi-Lie and Courant algebroids. 
Ralph Blumenhagen, Andreas Deser, Erik Plauschinn, Felix Rennecke
hep-th math-ph math.MP