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pubmed-article:15836295rdf:typepubmed:Citationlld:pubmed
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pubmed-article:15836295pubmed:issue1lld:pubmed
pubmed-article:15836295pubmed:dateCreated2005-4-19lld:pubmed
pubmed-article:15836295pubmed:abstractTextThe pioneering computer simulations of the energy relaxation mechanisms performed by Fermi, Pasta, and Ulam (FPU) can be considered as the first attempt of understanding energy relaxation and thus heat conduction in lattices of nonlinear oscillators. In this paper we describe the most recent achievements about the divergence of heat conductivity with the system size in one-dimensional (1D) and two-dimensional FPU-like lattices. The anomalous behavior is particularly evident at low energies, where it is enhanced by the quasiharmonic character of the lattice dynamics. Remarkably, anomalies persist also in the strongly chaotic region where long-time tails develop in the current autocorrelation function. A modal analysis of the 1D case is also presented in order to gain further insight about the role played by boundary conditions.lld:pubmed
pubmed-article:15836295pubmed:languageenglld:pubmed
pubmed-article:15836295pubmed:journalhttp://linkedlifedata.com/r...lld:pubmed
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pubmed-article:15836295pubmed:statusMEDLINElld:pubmed
pubmed-article:15836295pubmed:monthMarlld:pubmed
pubmed-article:15836295pubmed:issn1054-1500lld:pubmed
pubmed-article:15836295pubmed:authorpubmed-author:PolitiAntonio...lld:pubmed
pubmed-article:15836295pubmed:authorpubmed-author:LiviRobertoRlld:pubmed
pubmed-article:15836295pubmed:authorpubmed-author:LepriStefanoSlld:pubmed
pubmed-article:15836295pubmed:issnTypePrintlld:pubmed
pubmed-article:15836295pubmed:volume15lld:pubmed
pubmed-article:15836295pubmed:ownerNLMlld:pubmed
pubmed-article:15836295pubmed:authorsCompleteYlld:pubmed
pubmed-article:15836295pubmed:pagination15118lld:pubmed
pubmed-article:15836295pubmed:dateRevised2008-11-21lld:pubmed
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pubmed-article:15836295pubmed:year2005lld:pubmed
pubmed-article:15836295pubmed:articleTitleStudies of thermal conductivity in Fermi-Pasta-Ulam-like lattices.lld:pubmed
pubmed-article:15836295pubmed:affiliationIstituto Nazionale di Ottica Applicata, largo E. Fermi 6, I-50125 Florence, Italy. lepri@inoa.itlld:pubmed
pubmed-article:15836295pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:15836295pubmed:publicationTypeReviewlld:pubmed
pubmed-article:15836295pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed