Penrose limit of N=1 gauge theories Original Research Article

We find a Penrose limit of AdS5×T1,1 which gives the pp-wave geometry identical to the one that appears in the Penrose limit of AdS5×S5. This leads us to conjecture that there is a subsector of the corresponding N=1 gauge theory which has enhanced N=4 supersymmetry. We identify operators in the N=1 gauge theory with stringy excitations in the pp-wave geometry and discuss how the gauge theory operators fall into N=4 supersymmetry multiplets. We find similar enhancement of symmetry in some other models, but there are also examples in which there is no supersymmetry enhancement in the Penrose limit.