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Energy transport in disordered classical spin chains

2009; American Physical Society; Volume: 80; Issue: 11 Linguagem: Inglês

10.1103/physrevb.80.115104

1550-235X

Vadim Oganesyan, Arijeet Pal, David A. Huse,

Quantum and electron transport phenomena

We present a numerical study of the diffusion of energy at high temperature in strongly disordered chains of interacting classical spins evolving deterministically. We find that quenched randomness strongly suppresses transport with the diffusion constant becoming reduced by several orders of magnitude upon the introduction of moderate disorder. We have also looked for but not found signs of a classical many-body localization transition at any nonzero strength of the spin-spin interactions.