Abstract
We derive the Wilsonian renormalization group equation in two dimensional N=2 supersymmetric nonlinear sigma models. This equation reveals that these sigma models on compact Einstein Kähler manifolds are aymptotically free. This result is general and does not depend on the specific forms of the Kähler potentials. We also examine the renormalization group flow for a new model which connects two manifolds with different global symmetries.
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