Heat conduction in the disordered Fermi-Pasta-Ulam chain

Abhishek Dhar, Keiji Saito

研究成果: Article査読

30 被引用数 (Scopus)

抄録

We address the question of the effect of disorder on heat conduction in an anharmonic chain with interactions given by the Fermi-Pasta-Ulam (FPU) potential. In contrast to the conclusions of an earlier paper, which found that disorder could induce a finite thermal conductivity at low temperatures, we find no evidence of a finite-temperature transition in conducting properties. Instead, we find that at low temperatures, small system-size transport properties are dominated by disorder but the asymptotic system size dependence of current is given by the usual FPU result J∼1N2/3. We also present interesting results on the binary-mass ordered FPU chain.

本文言語English
論文番号061136
ジャーナルPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
78
6
DOI
出版ステータスPublished - 2008 12 1
外部発表はい

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 統計学および確率
  • 凝縮系物理学

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