Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-09-11
Phys.Lett. B444 (1998) 127-135
Physics
High Energy Physics
High Energy Physics - Theory
12 pages, LaTex2e
Scientific paper
10.1016/S0370-2693(98)01363-X
We present a supersymmetric and $\kappa$-symmetric D-string action on $AdS_5 \times S^5$ in supercoset construction. As in the previous work of the super D-string action in the flat background, the super D-string action on $AdS_5 \times S^5$ can be transformed to a form of the IIB Green-Schwarz superstring action with the $SL(2,Z)$ covariant tension on $AdS_5 \times S^5$ through a duality transformation. In order to understand a part of the duality transformation as SO(2) rotation of N=2 spinor coordinates, it seems to be necessary to fix the $\kappa$-symmetry in a gauge condition which simplifies the classical action. This is the article showing for the first time that there exists S-duality in type IIB superstring theory in a curved background whose validity has been conjectured in the past but not shown so far in an explicit way.
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