Reconstruction of Type II Supergravities via $O(d)\times O(d)$ Duality Invariants

Abstract

We reconstruct type II supergravities by using building blocks of $O(d)\times O(d)$ invariants.These invariants are obtained by explicitly analyzing $O(d)\times O(d)$ transformations of 10 dimensional massless fields. Similar constructions are done by employing double field theory or generalized geometry, but we completed the reconstruction within the framework of the supergravities.

arXiv comment16 pages. References and appreciation are added