David Andriot, Olaf Hohm, Magdalena Larfors, Dieter Lust, Peter Patalong
We give a geometrical interpretation of the non-geometric 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
non-trivial 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.
View original:
http://arxiv.org/abs/1202.3060
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