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1/4 BPS States and Non-Perturbative Couplings in N=4 String Theories

We compute certain 2K+4-point one-loop couplings in the type IIA string compactified on K3 x T^2, which are related a topological index on this manifold. Their special feature is that they are sensitive to only short and intermediate BPS multiplets. The couplings derive from underlying prepotentials...

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Detalles Bibliográficos
Autores principales: Lerche, W., Stieberger, S.
Lenguaje:eng
Publicado: 1999
Materias:
Acceso en línea:https://dx.doi.org/10.4310/ATMP.1999.v3.n5.a7
http://cds.cern.ch/record/393633