On type II superstrings in bosonic backgrounds: the role of fermions and T-duality

Details On type II superstrings in bosonic backgrounds: the role of fermions and T-duality On type II superstrings in bosonic backgrounds: the role of fermions and T-duality

2003-03-11

arxiv.org/abs/hep-th/0303102v4

JHEP 0304 (2003) 004

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, latex. more typos corrected

Scientific paper

10.1088/1126-6708/2003/04/004

We derive the actions for type II Green-Schwarz strings up to second order in the fermions, for general bosonic backgrounds. We base our work on the so-called normal coordinate expansion. The resulting actions are $\kappa$-symmetric and, for the case of surviving background supersymmetries, supersymmetric. We first obtain the type IIa superstring action from the 11D supermembrane by double dimensional reduction. Then, by means of a generalization of T-duality we derive the type IIb superstring action. The resulting actions are surprisingly simple and elegant.

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