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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Física
2006
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| Online Access: | https://www.redalyc.org/articulo.oa?id=46436544 |
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Table of Contents:
- Dynamical Phase Transition in Vibrational Surface Modes H. M. Pastawski H. L. Calvo Física, Astronomía y Matemáticas Dynamical phase transition Origin of frictional forces Vibrational localized states We consider the dynamical properties of a simple model of vibrational surface modes. We obtain the exactspectrum of surface excitations and discuss their dynamical features. In addition to the usually discussed localizedand oscillatory regimes we also find a second phase transition where the surface mode frequency becomespurely imaginary and describes an overdamped regime. Noticeably, this transition has an exact correspondenceto the oscillatory - overdamped transition of the standard oscillator with a frictional force proportional to velocity. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436544 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3B Vol.36