Branislav Sazdovic

T-duality in a weakly curved background

We consider the closed string propagating in a weakly curved background which consists of a constant metric and a Kalb–Ramond field with an infinitesimally small coordinate-dependent part. We propose a procedure for constructing the

Fermionic T-duality and momenta noncommutativity ∗

T

Gauge symmetries decrease the number of Dp-brane dimensions

T-dual theory, performing

T-duality as coordinates permutation in double space for weakly curved background ∗

T

T-dualization of type II superstring theory in double space

T-duality transformations along the coordinates on which the Kalb–Ramond field depends. The theory obtained is defined in the non-geometric double space, described by the Lagrange multiplier