D-brane Models with Non-Linear Supersymmetry

Details D-brane Models with Non-Linear Supersymmetry D-brane Models with Non-Linear Supersymmetry

2001-11-22

arxiv.org/abs/hep-th/0111209v2

Nucl.Phys. B631 (2002) 3-42

Physics

High Energy Physics

High Energy Physics - Theory

48 pages, 2 figures, corrected some typos, one reference added

Scientific paper

We study a class of type I string models with supersymmetry broken on the world-volume of some D-branes and vanishing tree-level potential. Despite the non-supersymmetric spectrum, supersymmetry is non-linearly realized on these D-branes, while it is spontaneously broken in the bulk by Scherk-Schwarz boundary conditions. These models can easily accommodate 3-branes with interesting gauge groups and chiral fermions. We also study the effective field theory and in particular we compute the four-fermion couplings of the localized Goldstino with the matter fermions on the brane.

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