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- Title
Energy flow in quantum critical systems far from equilibrium.
- Authors
Bhaseen, M. J.; Doyon, Benjamin; Lucas, Andrew; Schalm, Koenraad
- Abstract
Characterizing the behaviour of strongly coupled quantum systems out of equilibrium is a cardinal challenge for both theory and experiment. With diverse applications ranging from the dynamics of the quark-gluon plasma to transport in novel states of quantum matter, establishing universal results and organizing principles out of equilibrium is crucial. We present a universal description of energy transport between quantum critical heat baths in arbitrary dimension. The current-carrying non-equilibrium steady state (NESS) is a Lorentz-boosted thermal state. In the context of gauge/gravity duality this reveals an intimate correspondence between far-from-equilibrium transport and black hole uniqueness theorems. We provide analytical expressions for the energy current and the generating function of energy current fluctuations, together with predictions for experiment.
- Subjects
QUANTUM mechanics; QUARK-gluon plasma; EQUILIBRIUM reactions; FLUCTUATIONS (Physics); STEADY state conduction; THERMODYNAMIC control
- Publication
Nature Physics, 2015, Vol 11, Issue 6, p509
- ISSN
1745-2473
- Publication type
Article
- DOI
10.1038/nphys3320