D-branes in Gepner models and supersymmetry

Details D-branes in Gepner models and supersymmetry D-branes in Gepner models and supersymmetry

1998-08-13

arxiv.org/abs/hep-th/9808080v3

Nucl.Phys.B543:73-104,1999

Physics

High Energy Physics

High Energy Physics - Theory

34 pages, 2 figures, uses harvmac and epsf, minor changes, typos corrected, a reference added

Scientific paper

10.1016/S0550-3213(98)00864-5

Boundary states corresponding to wrapped D-branes in Calabi-Yau compactifications of type II strings are discussed using Gepner models. In particular boundary conditions corresponding to D-0 branes and D-instantons in four dimensions are investigated. The boundary states constructed by Recknagel and Schomerus are analyzed in the light-cone gauge and the broken and conserved space-time supersymmetry charges are found. The geometrical interpretation of these algebraically constructed boundary states is clarified in some simple cases. Moreover, the action of mirror symmetry and other discrete symmetries of the Gepner model on the boundary states are discussed. As an application the boundary states are used to calculate instanton induced corrections to metric on the hypermultiplets in the N=2 effective action.

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