Heat transport in quantum spin chains: the relevance of integrability

Details Heat transport in quantum spin chains: the relevance of integrability Heat transport in quantum spin chains: the relevance of integrability

2010-03-08

arxiv.org/abs/1003.1559v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 2figs

Scientific paper

We investigate heat transport in various quantum spin chains, using the projector operator technique. We find that anomalous heat transport is linked not to the integrability of the Hamiltonian, but to whether it can be mapped to a model of non-interacting fermions. Our results also suggest how seemingly anomalous transport may occur at low temperatures in a much wider class of models.

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