title: Survival and residence times in disordered chains with bias.
abstract: We present a unified framework for first-passage time and residence time of random walks in finite one-dimensional disordered biased systems. The derivation is based on the exact expansion of the backward master equation in cumulants. The dependence on the initial condition, system size, and bias strength is explicitly studied for models with weak and strong disorders. Application to thermally activated processes is also developed.
authors.affiliation: Facultad de Matemática, Astronomía y Física, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina. pury@famaf.unc.edu.ar
authors.forename: Pedro A
authors.initials: PA
authors.lastname: Pury
authors.forename: Manuel O
authors.initials: MO
authors.lastname: Cáceres