Non-geometric String Backgrounds and Worldsheet Algebras

Understand

Using worldsheet Hamiltonian methods we derive a charge algebra which generalizes the Courant bracket to include fluxes of general index type.

• This is achieved by coupling a bi-vector to the Hamiltonian of the Polyakov model.
• This bracket is useful to describe so-called non-geometric backgrounds and has been discussed in the mathematics literature by Dmitry Roytenberg.