Fermion-parity duality and energy relaxation in interacting open systems

Fermion-parity duality and energy relaxation in interacting open systems

J. Schulenborg    R. B. Saptsov    F. Haupt    J. Splettstoesser    M. R. Wegewijs (1) Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-41298 Göteborg, Sweden
(2) Institute for Theory of Statistical Physics, RWTH Aachen, 52056 Aachen, Germany
(3) JARA- Fundamentals of Future Information Technology
(4) JARA Institute for Quantum Information, RWTH Aachen, 52056 Aachen, Germany
(5) Peter Grünberg Institut, Forschungszentrum Jülich, 52425 Jülich, Germany
Abstract

We study the transient heat current out of a confined electron system into a weakly coupled electrode in response to a voltage switch. We show that the decay of the Coulomb interaction energy for this repulsive system exhibits signatures of electron-electron attraction, and is governed by an interaction-independent rate. This can only be understood from a general duality that relates the non-unitary evolution of a quantum system to that of a dual model with inverted energies. Deriving from the fermion-parity superselection postulate, this duality applies to a large class of open systems.

pacs:
85.75.-d, 73.63.Kv, 85.35.-p
thanks: First and second author contributed equally.thanks: First and second author contributed equally.

Energy decay due to heat currents is of key importance in the continued downscaling of electronic devices CODE(0x55799494a438)

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