99-355 Wei-Min Wang
Supersymmetry, Witten Complex and Asymptotics for Directional Lyapunov Exponents in $\Z^d$ (371K, .dvi) Sep 24, 99
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Abstract. By using a supersymmetric Gaussian representation, we transform the averaged Green's function for random walks in random potentials into a 2-point correlation function of a correponding lattice field theory. We study the resulting lattice field theory using the Witten Laplacian formulation. We obtain the asymptotics for the directional Lyapunov exponents.

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