1. The <f>D</f>-instanton and other supersymmetric <f>D</f>-branes in IIB plane-wave string theory
- Author
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Gaberdiel, Matthias R. and Green, Michael B.
- Subjects
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BRANES , *INSTANTONS , *GAUGE field theory - Abstract
A class of
D -branes for the type IIB plane-wave background is considered that preserve half the dynamical supersymmetries of the light-cone gauge. TheD -branes of this type are the Euclidean (or instantonic)(0,0) ,(0,4) , and(4,0) branes (where(r,s) denotes a brane oriented withr axes in the first four directions transverse to the +, − light-cone, ands axes in the second four directions). Corresponding LorentzianD -branes are(+,−;0,0) ,(+,−;0,4) , and(+,−;4,0) . These are constructed in two ways. The first uses a boundary state formalism which implements appropriate fermionic gluing conditions and the second is based on a direct quantization of the open strings ending on the branes. In distinction to theD -branes considered earlier these have massless world-volume fermions but do not possess kinematical supersymmetries. Cylinder diagrams describing the overlap between a pair of boundary states displaced by some distance are evaluated. The open-string description of this system involves mode frequencies that are, in general, given by irrational solutions to transcendental equations. The closed-string and open-string descriptions are shown to be equivalent by a nontrivial implementation of theS modular transformation. A classical description of theD -instanton (the(0,0) case) in light-cone gauge is also given. [Copyright &y& Elsevier]- Published
- 2003
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