Reconstruction of Type II Supergravities via <i>O</i>(<i>d</i>) × <i>O</i>(<i>d</i>) Duality Invariants

Abstract

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

Keywords

• string theory
• supergravity
• duality