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dc.creatorQuintero, Niurka R.
dc.creatorSánchez Sánchez, Ángel
dc.creatorMertens, Franz G.
dc.date.accessioned2015-04-11T08:18:57Z
dc.date.available2015-04-11T08:18:57Z
dc.date.issued1999
dc.identifier.issn1539-3755es
dc.identifier.issn1550-2376es
dc.identifier.urihttp://hdl.handle.net/11441/23754
dc.description.abstractWe study sine-Gordon kink diffusion at finite temperature in the overdamped limit. By means of a general perturbative approach, we calculate the first- and second-order ~ in temperature ! contributions to the diffusion coefficient. We compare our analytical predictions with numerical simulations. The good agreement allows us to conclude that, up to temperatures where kink-antikink nucleation processes cannot be neglected, a diffusion constant linear and quadratic in temperature gives a very accurate description of the diffusive motion of the kink. The quadratic temperature dependence is shown to stem from the interaction with the phonons. In addition, we calculate and compute the average value ^ f ( x , t ) & of the wave function as a function of time, and show that its width grows with A t . We discuss the interpretation of this finding and show that it arises from the dispersion of the kink center positions of individual realizations which all keep their width.es
dc.formatapplication/pdfes
dc.language.isoenges
dc.relation.ispartofPhysical Review E, 60 (1), 220-230es
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.titleOverdamped sine-Gordon kink in a thermal bathes
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.accessrightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Física Aplicada Ies
dc.relation.publisherversionhttp://journals.aps.org/pre/pdf/10.1103/PhysRevE.60.222es
dc.relation.publisherversionhttp://dx.doi.org/10.1103/PhysRevE.60.222
dc.identifier.doi10.1103/PhysRevE.60.222
dc.identifier.idushttps://idus.us.es/xmlui/handle/11441/23754

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