title: Geometric action for nongeometric fluxes.
abstract: We give a geometrical interpretation of the nongeometric Q and R fluxes. To this end, we consider double field theory in a formulation that is related to the conventional one by a field redefinition taking the form of a T duality inversion. The R flux is a tensor under diffeomorphisms and satisfies a nontrivial Bianchi identity. The Q flux can be viewed as part of a connection that covariantizes the winding derivatives with respect to diffeomorphisms. We give a higher-dimensional action with a kinetic term for the R flux and a "dual" Einstein-Hilbert term containing the connection Q.
authors.affiliation: Arnold-Sommerfeld-Center for Theoretical Physics, Fakultät für Physik, Ludwig-Maximilians-Universität München, Theresienstrasse 37, 80333 München, Germany.
authors.forename: David
authors.initials: D
authors.lastname: Andriot
authors.forename: Olaf
authors.initials: O
authors.lastname: Hohm
authors.forename: Magdalena
authors.initials: M
authors.lastname: Larfors
authors.forename: Dieter
authors.initials: D
authors.lastname: Lüst
authors.forename: Peter
authors.initials: P
authors.lastname: Patalong