D-branes and BCFT in Hpp-wave backgrounds - Archive ouverte HAL
Article Dans Une Revue Nuclear Physics A Année : 2005

D-branes and BCFT in Hpp-wave backgrounds

Résumé

In this paper we study two classes of symmetric D-branes in the Nappi-Witten gravitational wave, namely D2 and $S 1$ branes. We solve the sewing constraints and determine the bulk-boundary couplings and the boundary three-point couplings. For the D2 brane our solution gives the first explicit results for the structure constants of the twisted symmetric branes in a WZW model. We also compute the boundary four-point functions, providing examples of open string four-point amplitudes in a curved background. We finally discuss the annulus amplitudes, the relation with branes in $AdS_3$ and in $S^3$ and the analogy between the open string couplings in the $H_4$ model and the couplings for magnetized and intersecting branes.

Dates et versions

hal-00171862 , version 1 (13-09-2007)

Identifiants

Citer

G. d'Appollonio, E. Kiritsis. D-branes and BCFT in Hpp-wave backgrounds. Nuclear Physics A, 2005, 712, pp.433-512. ⟨10.1016/j.nuclphysb.2005.01.020⟩. ⟨hal-00171862⟩
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