Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-05-30
Phys.Rev.D66:055009,2002
Physics
High Energy Physics
High Energy Physics - Theory
Latex, 30 pages, v2: references added and minor corrections, v3: normalization of fermions in N=2 vector corrected and referen
Scientific paper
10.1103/PhysRevD.66.055009
We analyze theories in which a supersymmetric sector is coupled to a supersymmetry-breaking sector described by a non-linear realization. We show how to consistently couple N=1 supersymmetric matter to non-supersymmetric matter in such a way that all interactions are invariant under non-linear supersymmetry transformations. We extend this formalism to couple N=2 supersymmetric matter to N=1 superfields that lack N=2 partners but transform in a non-linear representation of the N=2 algebra. In particular, we show how to couple an N=2 vector to N=1 chiral fields in a consistent way. This has important applications to effective field theories describing the interactions of D-brane world-volume fields with bulk fields. We apply our method to study systems where different sectors break different halves of supersymmetry, which appear naturally in models of intersecting branes.
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