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http://hdl.handle.net/2289/3750
Title: | Heat conduction in the disordered Fermi-Pasta-Ulam chain |
Authors: | Dhar, Abhishek Saito, Keiji |
Issue Date: | 31-Dec-2008 |
Publisher: | The American Physical Society |
Citation: | Physical Review E, 2008, Vol.78, p061136 |
Abstract: | 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 [Phys. Rev. Lett. 86, 63 (2001)], 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~1/N2/3. We also present interesting results on the binary-mass ordered FPU chain. |
Description: | Open Access |
URI: | http://hdl.handle.net/2289/3750 |
ISSN: | 1539-3755 1550-2376 (Online) |
Alternative Location: | http://link.aps.org/doi/10.1103/PhysRevE.78.061136 http://dx.doi.org/10.1103/PhysRevE.78.061136 |
Copyright: | (2008) The American Physical Society |
Appears in Collections: | Research Papers (TP) |
Files in This Item:
File | Description | Size | Format | |
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2008 PRE_78_061136.pdf | 4p. | 435.35 kB | Adobe PDF | View/Open |
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