Criticality in transport through the quantum Ising chain
arXiv:1208.5989 · doi:10.1103/PhysRevLett.109.240402
Abstract
We consider thermal transport between two reservoirs coupled by a quantum Ising chain as a model for non-equilibrium physics induced in quantum-critical many-body systems. By deriving rate equations based on exact expressions for the quasiparticle pairs generated during the transport, we observe signatures of the underlying quantum phase transition in the steady-state energy current already at finite reservoir temperatures.
to appear in PRL
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