Non-Supersymmetric Type I Strings with Zero Vacuum Energy

Details Non-Supersymmetric Type I Strings with Zero Vacuum Energy Non-Supersymmetric Type I Strings with Zero Vacuum Energy

1999-04-13

arxiv.org/abs/hep-th/9904092v2

Nucl.Phys.B555:116-134,1999

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, TeX, harvmac. Minor corrections. Final version to appear on Nucl.Phys.B

Scientific paper

10.1016/S0550-3213(99)00344-2

We study open descendants of non-supersymmetric type IIB asymmetric (freely acting) orbifolds with zero cosmological constant. A generic feature of these models is that supersymmetry remains unbroken on the brane at all mass levels, while it is broken in the bulk in a way that preserves Fermi-Bose degeneracy in both the massless and massive (closed string) spectrum. This property remains valid in the heterotic dual of the type II model but only for the massless excitations. A possible application of these constructions concerns scenarios of low-energy supersymmetry breaking with large dimensions.

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