Adiabatic Loading of One-Dimensional SU(N) Alkaline-Earth-Atom Fermions in Optical Lattices

Lars Bonnes, Kaden R. A. Hazzard, Salvatore R. Manmana, Ana Maria Rey, and Stefan Wessel
Phys. Rev. Lett. 109, 205305 – Published 14 November 2012

Abstract

Ultracold fermionic alkaline earth atoms confined in optical lattices realize Hubbard models with internal SU(N) symmetries, where N can be as large as ten. Such systems are expected to harbor exotic magnetic physics at temperatures below the superexchange energy scale. Employing quantum Monte Carlo simulations to access the low-temperature regime of one-dimensional chains, we show that after adiabatically loading a weakly interacting gas into the strongly interacting regime of an optical lattice, the final temperature decreases with increasing N. Furthermore, we estimate the temperature scale required to probe correlations associated with low-temperature SU(N) magnetism. Our findings are encouraging for the exploration of exotic large-N magnetic states in ongoing experiments.

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  • Received 18 July 2012

DOI:https://doi.org/10.1103/PhysRevLett.109.205305

© 2012 American Physical Society

Authors & Affiliations

Lars Bonnes1,*, Kaden R. A. Hazzard2, Salvatore R. Manmana2, Ana Maria Rey2, and Stefan Wessel3

  • 1Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria
  • 2JILA, NIST and University of Colorado, and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA
  • 3Institute for Theoretical Solid State Physics, JARA-FIT, and JARA-HPC, RWTH Aachen University, Otto-Blumenthal-Strasse 26, D-52056 Aachen, Germany

  • *lars.bonnes@uibk.ac.at

See Also

Entropy Dependence of Correlations in One-Dimensional SU(N) Antiferromagnets

Laura Messio and Frédéric Mila
Phys. Rev. Lett. 109, 205306 (2012)

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Vol. 109, Iss. 20 — 16 November 2012

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