Date
2016
Description
Lecture Notes in Physics n°921
Lien vers un document non conservé dans cette base
https://arxiv.org/abs/1509.02474v2
Indexation documentaire
Sciences connexes (physique, astrophysique)
Subject
harmonic chains
Titre de l'ouvrage
Thermal Transport in Low Dimensions. From Statistical Physics to Nanoscale Heat Transfer
Auteur
Lepri, Stefano
Nom de l'éditeur
Springer International Publishing
Ville de l'éditeur
Berlin
Année
2016
ISBN
978-3-319-29259-5
Auteur
Basile, Giada
Bernardin, Cédric
Jara, Milton
Komorowski, Tomasz
Olla, Stefano
Type
Chapitre d'ouvrage
Nombre de pages du document
215-237
Résumé en anglais
We review recent rigorous mathematical results about the macroscopic behaviour of harmonic chains with the dynamics perturbed by a random exchange of velocities between nearest neighbor particles. The random exchange models the effects of nonlinearities of anharmonic chains and the resulting dynamics have similar macroscopic behaviour. In particular there is a superdiffusion of energy for unpinned acoustic chains. The corresponding evolution of the temperature profile is governed by a fractional heat equation. In non-acoustic chains we have normal diffusivity, even if momentum is conserved.
