A bstract We consider deformations of D-brane systems induced by a change in the closed string background framework bosonic open-closed field theory, where it is possible to unambiguously tame infrared divergences originating from both open and degenerations. classical solution induces tadpole for strings which shifts vacuum generates cosmological constant composed two terms: one directly relat...

The generalized Kerr-Schild ansatz (GKSA) is a powerful tool for constructing exact solutions in Double Field Theory (DFT). In this paper we focus the heterotic formulation of DFT, considering up to four-derivative terms action principle, while field content perturbed by GKSA. We study inclusion version Green-Schwarz mechanism setup, order reproduce low energy effective supergravity upon parame...