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

Abstract

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.

arXiv comment10 pages, latex. more typos corrected

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• Fermions, T-duality and effective actions for D-branes in bosonic backgrounds
• Semiclassical spinning strings and confining gauge theories
• Higher Order Corrections to the Hagedorn Temperature at Strong Coupling
• Dirac equation for the supermembrane in a background with fluxes from a component description of the D=11 supergravity-supermembrane interacting system
• The explicit form of the effective action for F1 and D-branes
• Semiclassical strings on confining backgrounds
• Semiclassical Quantization of the Superstring and Hagedorn Temperature
• Closed strings in Ramond-Ramond backgrounds
• On the Hagedorn Temperature in Holographic Confining Gauge Theories
• Hagedorn temperature in holography: world-sheet and effective approaches
• On the polarization of closed strings by Ramond-Ramond fluxes
• Branes, fermions, and superspace dualities