Mostrar registro simples

dc.contributor.authorErichsen Junior, Rubempt_BR
dc.contributor.authorTheumann, Walter Karlpt_BR
dc.date.accessioned2014-08-26T09:26:21Zpt_BR
dc.date.issued2011pt_BR
dc.identifier.issn1539-3755pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/101840pt_BR
dc.description.abstractThe statistical mechanics of a two-state Ising spin-glass model with finite random connectivity, in which each site is connected to a finite number of other sites, is extended in this work within the replica technique to study the phase transitions in the three-state Ghatak-Sherrington (or random Blume-Capel) model of a spin glass with a crystal-field term. The replica symmetry ansatz for the order function is expressed in terms of a two-dimensional effective-field distribution, which is determined numerically by means of a population dynamics procedure. Phase diagrams are obtained exhibiting phase boundaries that have a reentrance with both a continuous and a genuine first-order transition with a discontinuity in the entropy. This may be seen as “inverse freezing,” which has been studied extensively lately, as a process either with or without exchange of latent heat.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. E, Statistical, nonlinear, and soft matter physics. Vol. 83, no. 6 (June 2011), 061126, 7 p.pt_BR
dc.rightsOpen Accessen
dc.subjectFísica estatísticapt_BR
dc.subjectAnálise estatísticapt_BR
dc.subjectInteracoes de campo cristalinopt_BR
dc.subjectEntropiapt_BR
dc.subjectModelo de isingpt_BR
dc.subjectDiagramas de fasept_BR
dc.subjectVidros de spinpt_BR
dc.titlePhase transitions in the three-state Ising spin-glass model with finite connectivitypt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000794349pt_BR
dc.type.originEstrangeiropt_BR


Thumbnail
   

Este item está licenciado na Creative Commons License

Mostrar registro simples