Abstract
We consider thermal transport between two reservoirs coupled by a quantum Ising chain as a model for nonequilibrium 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 and different reservoir temperatures.
- Received 29 August 2012
DOI:https://doi.org/10.1103/PhysRevLett.109.240402
© 2012 American Physical Society