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 corresponding lattice field theory. We study the resulting lattice field theory using the Witten laplacian formulation. We obtain the asymptotics for the directional Lyapunov exponents.
@article{JEDP_1999____A18_0, author = {Wang, Wei-Min}, title = {Supersymmetry, {Witten} complex and asymptotics for directional {Lyapunov} exponents in $\mathbf {Z}^d$}, journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {18}, pages = {1--16}, publisher = {Universit\'e de Nantes}, year = {1999}, zbl = {01810591}, language = {en}, url = {http://www.numdam.org/item/JEDP_1999____A18_0/} }
TY - JOUR AU - Wang, Wei-Min TI - Supersymmetry, Witten complex and asymptotics for directional Lyapunov exponents in $\mathbf {Z}^d$ JO - Journées équations aux dérivées partielles PY - 1999 SP - 1 EP - 16 PB - Université de Nantes UR - http://www.numdam.org/item/JEDP_1999____A18_0/ LA - en ID - JEDP_1999____A18_0 ER -
%0 Journal Article %A Wang, Wei-Min %T Supersymmetry, Witten complex and asymptotics for directional Lyapunov exponents in $\mathbf {Z}^d$ %J Journées équations aux dérivées partielles %D 1999 %P 1-16 %I Université de Nantes %U http://www.numdam.org/item/JEDP_1999____A18_0/ %G en %F JEDP_1999____A18_0
Wang, Wei-Min. Supersymmetry, Witten complex and asymptotics for directional Lyapunov exponents in $\mathbf {Z}^d$. Journées équations aux dérivées partielles (1999), article no. 18, 16 p. http://www.numdam.org/item/JEDP_1999____A18_0/
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