Entropy-cooled nonequilibrium states of the Hubbard model

Werner, Philipp; Li, Jianju; Golež, Denis; Eckstein, Martin

doi:10.1103/PhysRevB.100.155130

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Journal article

Entropy-cooled nonequilibrium states of the Hubbard model

Werner, Philipp Department of Physics, University of Fribourg, Switzerland
Li, Jianju Department of Physics, University of Erlangen-Nürnberg, Erlangen, Germany
Golež, Denis Center for Computational Quantum Physics, Flatiron Institute, New York, USA
Eckstein, Martin Department of Physics, University of Erlangen-Nürnberg, Erlangen, Germany

16.10.2019

Published in:

Physical Review B. - 2019, vol. 100, no. 15, p. 155130

English We show that the recently proposed cooling-by-doping mechanism allows one to efficiently prepare interesting nonequilibrium states of the Hubbard model. Using nonequilibrium dynamical mean field theory and a particle-hole symmetric setup with dipolar excitations to full and empty bands we produce cold photodoped Mott insulating states with a sharp Drude peak in the optical conductivity, a superconducting state in the repulsive Hubbard model with an inverted population, and η -paired states in systems with a large density of doublons and holons. The reshuffling of entropy into full and empty bands not only provides an efficient cooling mechanism, it also allows one to overcome thermalization bottlenecks and slow dynamics that have been observed in systems cooled by the coupling to boson baths.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

Language