Flux backgrounds in 2D string theory

Abstract

We study RR flux backgrounds in two dimensional type 0 string theories. In particular, we study the relation between the 0A matrix model and the extremal black hole in two dimensions. Using T-duality we find a dual flux background in type OB theory and propose its matrix model description. When the Fermi level μis set to zero this system remains weakly coupled and exhibits a larger symmetry related to the structure of flux vacua. Finally, we construct a two dimensional type-IIB background as an orbifold of the OB background. © SISSA/ISAS 2004.