Double space T-dualization and coordinate dependent RR

Abstract

In this article we examine T-dualization in double space formalism of type II superstring theory in pure spinor formulation. Background fields that we consider will all be constant except Ramond-Ramond field which will infinitesimally depend only on bosonic coordinates $x^{\mu }$. In double space T-dual transformations are represented as permutations between starting $x^{\mu }$ and dual coordinates $y_{\mu }$. Combining these two sets of coordinates into double coordinate $Z^M=(x^{\mu },y_{\mu })$ while demanding that T-dual double coordinates have same transformation laws, we obtain how background fields transform under T-duality. Comparing these results with ones obtained with Buscher T-dualization procedure we are able to conclude that these two approaches are equivalent for cases where background fields have coordinate dependence.

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