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dc.creatorCuevas-Maraver, Jesús
dc.creatorKarachalios, Nikolaos I.
dc.creatorPalmero Acebedo, Faustino
dc.date.accessioned2015-05-13T11:53:19Z
dc.date.available2015-05-13T11:53:19Z
dc.date.issued2010
dc.identifier.issn0003-6811es
dc.identifier.issn1563-504Xes
dc.identifier.urihttp://hdl.handle.net/11441/24831
dc.description.abstractWe discuss the existence of breathers and of energy thresholds for their formation in DNLS lattices with linear and nonlinear impurities. In the case of linear impurities we present some new results concerning important differences between the attractive and repulsive impurity which is interplaying with a power nonlinearity. These differences concern the coexistence or the existence of staggered and unstaggered breather profile patterns. We also distinguish between the excitation threshold (the positive minimum of the power observed when the dimension of the lattice is greater or equal to some critical value) and explicit analytical lower bounds on the power (predicting the smallest value of the power a discrete breather one-parameter family), which are valid for any dimension. Extended numerical studies in one, two and three dimensional lattices justify that the theoretical bounds can be considered as thresholds for the existence of the frequency parametrized families. The discussion reviews and extends the issue of the excitation threshold in lattices with nonlinear impu- rities while lower bounds, with respect to the kinetic energy, are also discussed for traveling waves in FPU periodic lattices.es
dc.formatapplication/pdfes
dc.language.isoenges
dc.relation.ispartofApplicable Analysis: An International Journal, 89 (9), 1351-1385es
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectDNLS latticeses
dc.subjectFPU latticeses
dc.subjectdiscrete breatherses
dc.subjecttravelling waveses
dc.subjectenergy thresholdses
dc.subjectimpuritieses
dc.titleEnergy thresholds for the existence of breather solutions and traveling waves on latticeses
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Física Aplicada Ies
dc.relation.publisherversionhttp://www.tandfonline.com/doi/full/10.1080/00036810903277135es
dc.relation.publisherversionDOI: 10.1080/00036810903277135es
dc.relation.publisherversionhttp://dx.doi.org/10.1080/00036810903277135
dc.identifier.doi10.1080/00036810903277135
dc.identifier.idushttps://idus.us.es/xmlui/handle/11441/24831

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