title: Fluctuations in fluid invasion into disordered media.
abstract: Interfaces moving in a disordered medium exhibit stochastic velocity fluctuations obeying universal scaling relations related to the presence or absence of conservation laws. For fluid invasion of porous media, we show that the fluctuations of the velocity are governed by a geometry-dependent length scale arising from fluid conservation. This result is compared to the statistics resulting from a nonequilibrium (depinning) transition between a moving interface and a stationary, pinned one.
authors.affiliation: Theoretische Biologie, IZMB, Universität Bonn, 53115 Bonn, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Rost
authors.forename: Lasse
authors.initials: L
authors.lastname: Laurson
authors.forename: Martin
authors.initials: M
authors.lastname: Dubé
authors.forename: Mikko
authors.initials: M
authors.lastname: Alava