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Open Quantum Systems Decoherence
Finite speed heat transport in a quantum spin chain after quenched local cooling
arXiv
Authors: Pascal Fries, Haye Hinrichsen
Year
2016
Paper ID
43445
Status
Preprint
Abstract Read
~2 min
Abstract Words
86
Citations
N/A
Abstract
We study the dynamics of an initially thermalized spin chain in the quantum XY-model, after sudden coupling to a heat bath of lower temperature at one end of the chain. In the semi-classical limit we see an exponential decay of the system-bath heatflux by exact solution of the reduced dynamics. In the full quantum description however, we numerically find the heatflux to reach intermediate plateaus where it is approximately constant - a phenomenon that we attribute to the finite speed of heat transport via spin waves.
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- We study the dynamics of an initially thermalized spin chain in the quantum XY-model, after sudden coupling to a heat bath of lower temperature at one end of the chain.
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