Metastability and dispersive shock waves in Fermi-Pasta-Ulam system

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dc.creatorLorenzoni, Paolo
dc.creatorPaleari, Simone
dc.date2005-11-14
dc.date.accessioned2026-07-07T06:51:59Z
dc.date.available2026-07-07T06:51:59Z
dc.descriptionWe show the relevance of the dispersive analogue of the shock waves in the FPU dynamics. In particular we give strict numerical evidences that metastable states emerging from low frequency initial excitations, are indeed constituted by dispersive shock waves travelling through the chain. Relevant characteristics of the metastable states, such as their frequency extension and their time scale of formation, are correctly obtained within this framework, using the underlying continuum model, the KdV equation.
dc.description11 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/nlin/0511026
dc.identifierhttp://arxiv.org/abs/nlin/0511026
dc.identifierPhysica D 221 (2006) (2), pp. 110-117
dc.identifierdoi:10.1016/j.physd.2006.07.017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/105167
dc.subjectExactly Solvable and Integrable Systems
dc.subjectMathematical Physics
dc.subjectPattern Formation and Solitons
dc.titleMetastability and dispersive shock waves in Fermi-Pasta-Ulam system
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