Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-05-28
J.Geom.Phys. 54 (2005) 116-130
Physics
High Energy Physics
High Energy Physics - Theory
16 pages, 2 figures; v2: references added, misprints corrected
Scientific paper
We analyse the renormalisation properties of composite operators of scalar fields in the N=2 Super Yang-Mills theory. We compute the matrix of anomalous dimensions in the planar limit at one-loop order in the 't Hooft coupling, and show that it corresponds to the Hamiltonian of an integrable XXZ spin chain with an anisotropy parameter Delta>1. We suggest that this parameter could be related to the presence of non-trivial two-form fluxes in the dual supergravity background. We find that the running of the gauge coupling does not affect the renormalization group equations for these composite operators at one-loop order, and argue that this is a general property of gauge theories which is not related to supersymmetry.
Tanzini Alessandro
Vecchia Paolo Di
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