Title

Depinning in a Two-Layer Model of Plastic Flow

Author(s)/Creator(s)

Pierre Le Doussal, CNRS-Laboratoire de Physique Theorique de l’Ecole Normale Superieure
M. Cristina Marchetti, Syracuse UniversityFollow
Kay Jorg Wiese, l'Ecole Normale Superieure

Document Type

Article

Date

2-2-2008

Keywords

condensed matter, disordered systems and neural networks

Language

English

Disciplines

Physics

Description/Abstract

We study a model of two layers, each consisting of a d-dimensional elastic object driven over a random substrate, and mutually interacting through a viscous coupling. For this model, the mean-field theory (i.e. a fully connected model) predicts a transition from elastic depinning to hysteretic plastic depinning as disorder or viscous coupling is increased. A functional RG analysis shows that any small inter-layer viscous coupling destablizes the standard (decoupled) elastic depinning FRG fixed point for d4 most aspects of the mean-field theory are recovered. A one-loop study at non-zero velocity indicates, for d

Additional Information

This manuscript is from arXiv.org, for more information see http://arxiv.org/abs/0801.0137

Recommended Citation

arXiv:0801.0137v1

Source

harvested from arXiv.org

Creative Commons License

This work is licensed under a Creative Commons Attribution 3.0 License.