1301.2874 (Davoud Kamani)

S-duality Invariant Variables and Actions from the two Scalars of the
type IIB Superstring Theory    [PDF]

Davoud Kamani

Using two scalar fields of the type IIB superstring theory, i.e. the dilaton (the NS-NS scalar) and axion (the R-R scalar), we construct a number of scalars, differential forms and various 10-dimensional actions, which are invariant under the S-duality transformations. The invariant scalars help us to generalize the invariant actions. The generalized actions can be added to the action of the type IIB supergravity and hence extend its bosonic part.

View original: http://arxiv.org/abs/1301.2874