Heat conduction in the disordered Fermi-Pasta-Ulam chain

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DC Field	Value	Language
dc.contributor.author	Dhar, Abhishek	-
dc.contributor.author	Saito, Keiji	-
dc.date.accessioned	2009-05-13T10:58:58Z	-
dc.date.available	2009-05-13T10:58:58Z	-
dc.date.issued	2008-12-31	-
dc.identifier.citation	Physical Review E, 2008, Vol.78, p061136	en
dc.identifier.issn	1539-3755	-
dc.identifier.issn	1550-2376 (Online)	-
dc.identifier.uri	http://hdl.handle.net/2289/3750	-
dc.description	Open Access	en
dc.description.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.	en
dc.language.iso	en	en
dc.publisher	The American Physical Society	en
dc.relation.uri	http://link.aps.org/doi/10.1103/PhysRevE.78.061136	en
dc.relation.uri	http://dx.doi.org/10.1103/PhysRevE.78.061136	en
dc.rights	(2008) The American Physical Society	en
dc.title	Heat conduction in the disordered Fermi-Pasta-Ulam chain	en
dc.type	Article	en
Appears in Collections:	Research Papers (TP)

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