Duality covariant variables for STU-model in presence of non-holomorphic corrections
نویسندگان
چکیده
It is known that non-holomoorphic corrections are necessary in order to get duality invariant free energy and entropy function. However the present methods of incorporating non-holomorphic corrections are in conflict with special geometry properties of moduli space. The moduli fields do not transform in duality covariant way and their duality transformation also involves the graviphoton field strength. In the present note we construct duality covariant moduli fields for STUmodel perturbatively in powers of the graviphoton field strength and demonstrated their existence upto second order.
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