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Title: Orbital order of spinless fermions near an optical Feshbach resonance

Abstract

We study the quantum phases of a three-color Hubbard model that arises in the dynamics of the p-band orbitals of spinless fermions in an optical lattice. Strong, color-dependent interactions are induced by an optical Feshbach resonance. Starting from the microscopic scattering properties of ultracold atoms, we derive the orbital exchange constants at 1/3 filling on the cubic optical lattice. Using this, we compute the phase diagram in a Gutzwiller ansatz. We find phases with ''axial orbital order'' in which p{sub z} and p{sub x}+ip{sub y} (or p{sub x}-ip{sub y}) orbitals alternate.

Authors:
 [1];  [2]; ;  [3];  [2];  [1]
  1. ICFO-Institut de Ciencies Fotoniques, Parc Mediterrani de la Tecnologia, E-08860 Castelldefels (Spain)
  2. Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106 (United States)
  3. Center for Quantum Information and Control (CQuIC), and Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)
Publication Date:
OSTI Identifier:
22093442
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 5; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; COLOR; FERMIONS; HUBBARD MODEL; PHASE DIAGRAMS; RESONANCE; SCATTERING

Citation Formats

Hauke, Philipp, Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, Zhao, Erhai, Department of Physics and Astronomy, George Mason University, Fairfax, Virginia 22030, Goyal, Krittika, Deutsch, Ivan H., Liu, W. Vincent, Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, Lewenstein, Maciej, Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, and ICREA-Institucio Catalana de Recerca i Estudis Avancats, Lluis Companys 23, E-08010 Barcelona. Orbital order of spinless fermions near an optical Feshbach resonance. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.051603.
Hauke, Philipp, Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, Zhao, Erhai, Department of Physics and Astronomy, George Mason University, Fairfax, Virginia 22030, Goyal, Krittika, Deutsch, Ivan H., Liu, W. Vincent, Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, Lewenstein, Maciej, Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, & ICREA-Institucio Catalana de Recerca i Estudis Avancats, Lluis Companys 23, E-08010 Barcelona. Orbital order of spinless fermions near an optical Feshbach resonance. United States. https://doi.org/10.1103/PHYSREVA.84.051603
Hauke, Philipp, Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, Zhao, Erhai, Department of Physics and Astronomy, George Mason University, Fairfax, Virginia 22030, Goyal, Krittika, Deutsch, Ivan H., Liu, W. Vincent, Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, Lewenstein, Maciej, Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, and ICREA-Institucio Catalana de Recerca i Estudis Avancats, Lluis Companys 23, E-08010 Barcelona. 2011. "Orbital order of spinless fermions near an optical Feshbach resonance". United States. https://doi.org/10.1103/PHYSREVA.84.051603.
@article{osti_22093442,
title = {Orbital order of spinless fermions near an optical Feshbach resonance},
author = {Hauke, Philipp and Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106 and Zhao, Erhai and Department of Physics and Astronomy, George Mason University, Fairfax, Virginia 22030 and Goyal, Krittika and Deutsch, Ivan H. and Liu, W. Vincent and Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 and Lewenstein, Maciej and Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106 and ICREA-Institucio Catalana de Recerca i Estudis Avancats, Lluis Companys 23, E-08010 Barcelona},
abstractNote = {We study the quantum phases of a three-color Hubbard model that arises in the dynamics of the p-band orbitals of spinless fermions in an optical lattice. Strong, color-dependent interactions are induced by an optical Feshbach resonance. Starting from the microscopic scattering properties of ultracold atoms, we derive the orbital exchange constants at 1/3 filling on the cubic optical lattice. Using this, we compute the phase diagram in a Gutzwiller ansatz. We find phases with ''axial orbital order'' in which p{sub z} and p{sub x}+ip{sub y} (or p{sub x}-ip{sub y}) orbitals alternate.},
doi = {10.1103/PHYSREVA.84.051603},
url = {https://www.osti.gov/biblio/22093442}, journal = {Physical Review. A},
issn = {1050-2947},
number = 5,
volume = 84,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2011},
month = {Tue Nov 15 00:00:00 EST 2011}
}