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Entropy-cooled nonequilibrium states of the Hubbard model

Philipp Werner, Jianju Li, Denis Golež, and Martin Eckstein
Phys. Rev. B 100, 155130 – Published 16 October 2019

Abstract

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.

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  • Received 23 August 2019
  • Revised 3 October 2019

DOI:https://doi.org/10.1103/PhysRevB.100.155130

©2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Philipp Werner1, Jianju Li2, Denis Golež3, and Martin Eckstein2

  • 1Department of Physics, University of Fribourg, 1700 Fribourg, Switzerland
  • 2Department of Physics, University of Erlangen-Nürnberg, 91058 Erlangen, Germany
  • 3Center for Computational Quantum Physics, Flatiron Institute, 162 Fifth Avenue, New York, New York 10010, USA

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Issue

Vol. 100, Iss. 15 — 15 October 2019

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