Covariant Action for Type IIB Supergravity
arXiv:1511.08220 · doi:10.1007/JHEP07(2016)017
Abstract
Taking clues from the recent construction of the covariant action for type II and heterotic string field theories, we construct a manifestly Lorentz covariant action for type IIB supergravity, and discuss its gauge fixing maintaining manifest Lorentz invariance. The action contains a (non-gravitating) free 4-form field besides the usual fields of type IIB supergravity. This free field, being completely decoupled from the interacting sector, has no physical consequence.
LaTeX, 33 pages; v2,v3: references added; v4: added new section on supersymmetry