Four-dimensional BPS-spectra via M-theory

Details Four-dimensional BPS-spectra via M-theory Four-dimensional BPS-spectra via M-theory

1997-07-30

arxiv.org/abs/hep-th/9707251v2

Phys.Rev. D57 (1998) 1291-1298

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, 3 figures, uses harvmac. References added

Scientific paper

10.1103/PhysRevD.57.1291

We consider the realization of four-dimensional theories with N = 2 supersymmetry as M-theory configurations including a five-brane. Our emphasis is on the spectrum of massive states, that are realized as two-branes ending on the five-brane. We start with a determination of the supersymmetries that are left unbroken by the background metric and five-brane. We then show how the central charge of the N = 2 algebra arises from the central charge associated with the M-theory two-brane. This determines the condition for a two-brane configuration to be BPS-saturated in the four-dimensional sense. By imposing certain conditions on the moduli, we can give concrete examples of such two-branes. This leads us to conjecture that vectormultiplet and hypermultiplet BPS-saturated states correspond to two-branes with the topology of a cylinder and a disc respectively. We also discuss the phenomenon of marginal stability of BPS-saturated states.

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