Mass scales, supersymmetry breaking and open strings

Details Mass scales, supersymmetry breaking and open strings Mass scales, supersymmetry breaking and open strings

1999-11-25

arxiv.org/abs/hep-th/9911205v2

Class.Quant.Grav. 17 (2000) 939-950

Physics

High Energy Physics

High Energy Physics - Theory

Based on talks presented by the authors at STRINGS '99. Submitted to Classical and Quantum Gravity. misprints corrected

Scientific paper

10.1088/0264-9381/17/5/303

We review physical motivations and possible realizations of string vacua with large internal volume and/or low string scale and discuss the issue of supersymmetry breaking. In particular, we describe the key features of Scherk-Schwarz deformations in type I models and conclude by reviewing the phenomenon of ``brane supersymmetry breaking'': the tadpole conditions of some type-I models require that supersymmetry be {\it broken at the string scale} on a collection of branes, while being exact, to lowest order, in the bulk and on other branes.

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