Large N Limit on Langevin Equation: Two-Dimensional Nonlinear Sigma Model
R. Mochizuki, K. Yoshida
Abstract
We study the stochastic quantization of two-dimensional nonlinear sigma model in the large N limit. Our main tool is the effective Langevin equation with which we investigate nonperturbative phenomena and derive the results which are same as the path integral approach gives.
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