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http://hdl.handle.net/2445/18715| Title: | Growth of unstable interfaces in disordered media |
| Author: | Lacasta Palacio, Ana María Ramírez Piscina, Laureano Casademunt i Viader, Jaume Hernández Machado, Aurora Rodríguez Díaz, Miguel Ángel |
| Keywords: | Física estadística Termodinàmica Sistemes dinàmics diferenciables Superfícies (Física) Interfícies (Ciències físiques) Nanotecnologia Statistical physics Thermodynamics Differentiable dynamical systems Surfaces (Physics) Interfaces (Physical sciences) Nanotechnology |
| Issue Date: | 1998 |
| Publisher: | The American Physical Society |
| Abstract: | The effects of a disordered medium in the growth of unstable interfaces are studied by means of two local models with multiplicative and additive quenched disorder, respectively. For short times and large pushing the multiplicative quenched disorder is equivalent to a time-dependent noise. In this regime, the linear dispersion relation contains a destabilizing contribution introduced by the noise. For long times, the interface always gets pinned. We model the systematics of the pinned shapes by means of an effective nonlinear model. These results show good agreement with numerical simulations. For the additive noise we find numerically that a depinning transition occurs. |
| Note: | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.57.5754 |
| It is part of: | Physical Review E, 1998, vol. 57, núm. 5, p. 1459-1464 |
| URI: | http://hdl.handle.net/2445/18715 |
| Related resource: | http://dx.doi.org/10.1103/PhysRevE.57.5754 |
| ISSN: | 1539-3755 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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|---|---|---|---|---|
| 145938.pdf | 149.42 kB | Adobe PDF | View/Open |
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