title: Dissipation-driven behavior of nonpropagating hydrodynamic solitons under confinement.
abstract: We have identified a physical mechanism that rules the confinement of nonpropagating hydrodynamic solitons. We show that thin boundary layers arising on walls are responsible for a jump in the local damping. The outcome is a weak dissipation-driven repulsion that determines decisively the solitons' long-time behavior. Numerical simulations of our model are consistent with experiments. Our results uncover how confinement can generate a localized distribution of dissipation in out-of-equilibrium systems. Moreover, they show the preponderance of such a subtle effect in the behavior of localized structures. The reported results should explain the dynamic behavior of other confined dissipative systems.
authors.affiliation: Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile.
authors.forename: Leonardo
authors.initials: L
authors.lastname: Gordillo
authors.affiliation: Instituto de Física, Pontificia Universidad Católica de Valparaíso, Avenida Brasil, Valparaíso, Casilla 2950, Chile.
authors.forename: Mónica A
authors.initials: MA
authors.lastname: García-Ñustes