Spectral Flow on the Higgs Branch and AdS/CFT Duality

Details Spectral Flow on the Higgs Branch and AdS/CFT Duality Spectral Flow on the Higgs Branch and AdS/CFT Duality

2005-02-25

arxiv.org/abs/hep-th/0502224v2

JHEP 0506 (2005) 052

Physics

High Energy Physics

High Energy Physics - Theory

v2; 16 pages, 3 figures, LaTeX + JHEP class, 3 refs added, accepted for publication by JHEP

Scientific paper

10.1088/1126-6708/2005/06/052

We use AdS/CFT duality to study the large N_c limit of the meson spectrum on the Higgs branch of a strongly coupled, N=2 supersymmetric SU(N_c) gauge theory with N_f =2 fundamental hypermultiplets. In the dual supergravity description, the Higgs branch is described by SU(2) instanton configurations on D7-branes in an AdS background. We compute the spectral flow parameterized by the size of a single instanton. In the large N_c limit, there is a sense in which the flow from zero to infinite instanton size, or Higgs VEV, can be viewed as a closed loop. We show that this flow leads to a non-trivial rearrangement of the spectrum.

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