Energy transport in jammed sphere packings

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dc.creatorXu, Ning
dc.creatorVitelli, Vincenzo
dc.creatorWyart, Matthieu
dc.creatorLiu, Andrea J.
dc.creatorNagel, Sidney R.
dc.date2008-06-19
dc.date2008-11-17
dc.date.accessioned2026-07-07T12:41:48Z
dc.date.available2026-07-07T12:41:48Z
dc.descriptionWe calculate the normal modes of vibration in jammed sphere packings to obtain the energy diffusivity, a spectral measure of transport. At the boson peak frequency, we find an Ioffe-Regel crossover from a diffusivity that drops rapidly with frequency to one that is nearly frequency-independent. This crossover frequency shifts to zero as the system is decompressed towards the jamming transition, providing unambiguous evidence of a regime in frequency of nearly constant diffusivity. Such a regime, postulated to exist in glasses to explain the temperature dependence of the thermal conductivity, therefore appears to arise from properties of the jamming transition.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0806.3265
dc.identifierhttp://arxiv.org/abs/0806.3265
dc.identifierPhysical Review Letters 102, 038001 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.038001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219865
dc.subjectSoft Condensed Matter
dc.titleEnergy transport in jammed sphere packings
dc.typetext

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