Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevLett.112.040601
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dc.titleAnomalous heat diffusion
dc.contributor.authorLiu, S.
dc.contributor.authorHänggi, P.
dc.contributor.authorLi, N.
dc.contributor.authorRen, J.
dc.contributor.authorLi, B.
dc.date.accessioned2014-10-16T09:15:58Z
dc.date.available2014-10-16T09:15:58Z
dc.date.issued2014-01-28
dc.identifier.citationLiu, S., Hänggi, P., Li, N., Ren, J., Li, B. (2014-01-28). Anomalous heat diffusion. Physical Review Letters 112 (4) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevLett.112.040601
dc.identifier.issn00319007
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/95800
dc.description.abstractConsider anomalous energy spread in solid phases, i.e., Δx2(t)≡∫(x-x)2ρE(x,t)dx tβ, as induced by a small initial excess energy perturbation distribution ρE(x,t=0) away from equilibrium. The second derivative of this variance of the nonequilibrium excess energy distribution is shown to rigorously obey the intriguing relation d2Δx2(t)/dt2=2CJJ(t)/(kBT2c), where CJJ(t) equals the thermal equilibrium total heat flux autocorrelation function and c is the specific volumetric heat capacity. Its integral assumes a time-local Helfand-like relation. Given that the averaged nonequilibrium heat flux is governed by an anomalous heat conductivity, the energy diffusion scaling determines a corresponding anomalous thermal conductivity scaling behavior. © 2014 American Physical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1103/PhysRevLett.112.040601
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1103/PhysRevLett.112.040601
dc.description.sourcetitlePhysical Review Letters
dc.description.volume112
dc.description.issue4
dc.description.page-
dc.description.codenPRLTA
dc.identifier.isiut000331946800002
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