Coherence properties of a two-dimensional trapped Bose gas around the superfluid transition

doi:https://doi.org/10.1103/PHYSREVA.84.061606

Title: Coherence properties of a two-dimensional trapped Bose gas around the superfluid transition

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Abstract

We measure the momentum distribution of a two-dimensional trapped Bose gas and observe the increase of the range of coherence around the Berezinskii-Kosterlitz-Thouless (BKT) transition. We quantitatively compare our observed profiles to both a Hartree-Fock mean-field theory and quantum Monte Carlo simulations. In the normal phase, the momentum distribution is observed to sharpen well before the phase transition. This behavior is partially captured in a mean-field approach, in contrast to the physics of the BKT transition.

Authors:

Plisson, T.; Allard, B.; Salomon, G.; Aspect, A.; Bourdel, T. ^[1]; Holzmann, M. ^[2]; Bouyer, P. ^[1]

Laboratoire Charles Fabry, Institut d'Optique, CNRS, Universite Paris-Sud, 2 Avenue Augustin Fresnel, F-91127 Palaiseau CEDEX (France)
LPTMC, UMR 7600 of CNRS, Universite P. et M. Curie, F-75752 Paris (France)

Publication Date:: 2011-12-15

OSTI Identifier:: 22095528

Resource Type:: Journal Article

Journal Name:: Physical Review. A

Additional Journal Information:: Journal Volume: 84; Journal Issue: 6; 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:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BOSE-EINSTEIN GAS; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; HARTREE-FOCK METHOD; MEAN-FIELD THEORY; MONTE CARLO METHOD; PHASE TRANSFORMATIONS; SUPERFLUIDITY; TRAPPING; TWO-DIMENSIONAL CALCULATIONS

Citation Formats


                    Plisson, T., Allard, B., Salomon, G., Aspect, A., Bourdel, T., Holzmann, M., Universite Grenoble 1, CNRS, LPMMC, UMR 5493, Boite Postale 166, F-38042 Grenoble, Bouyer, P., and LP2N, Universite Bordeaux 1, IOGS, CNRS, 351 Cours de la Liberation, F-33405 Talence. Coherence properties of a two-dimensional trapped Bose gas around the superfluid transition.  United States: N. p., 2011. 
        Web.  doi:10.1103/PHYSREVA.84.061606.

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                    Plisson, T., Allard, B., Salomon, G., Aspect, A., Bourdel, T., Holzmann, M., Universite Grenoble 1, CNRS, LPMMC, UMR 5493, Boite Postale 166, F-38042 Grenoble, Bouyer, P., & LP2N, Universite Bordeaux 1, IOGS, CNRS, 351 Cours de la Liberation, F-33405 Talence. Coherence properties of a two-dimensional trapped Bose gas around the superfluid transition.  United States.  https://doi.org/10.1103/PHYSREVA.84.061606

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                    Plisson, T., Allard, B., Salomon, G., Aspect, A., Bourdel, T., Holzmann, M., Universite Grenoble 1, CNRS, LPMMC, UMR 5493, Boite Postale 166, F-38042 Grenoble, Bouyer, P., and LP2N, Universite Bordeaux 1, IOGS, CNRS, 351 Cours de la Liberation, F-33405 Talence. Thu .  
        "Coherence properties of a two-dimensional trapped Bose gas around the superfluid transition".  United States.  https://doi.org/10.1103/PHYSREVA.84.061606.

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@article{osti_22095528,

  title        = {Coherence properties of a two-dimensional trapped Bose gas around the superfluid transition},

  author       = {Plisson, T. and Allard, B. and Salomon, G. and Aspect, A. and Bourdel, T. and Holzmann, M. and Universite Grenoble 1, CNRS, LPMMC, UMR 5493, Boite Postale 166, F-38042 Grenoble and Bouyer, P. and LP2N, Universite Bordeaux 1, IOGS, CNRS, 351 Cours de la Liberation, F-33405 Talence},

  abstractNote = {We measure the momentum distribution of a two-dimensional trapped Bose gas and observe the increase of the range of coherence around the Berezinskii-Kosterlitz-Thouless (BKT) transition. We quantitatively compare our observed profiles to both a Hartree-Fock mean-field theory and quantum Monte Carlo simulations. In the normal phase, the momentum distribution is observed to sharpen well before the phase transition. This behavior is partially captured in a mean-field approach, in contrast to the physics of the BKT transition.},

  doi          = {10.1103/PHYSREVA.84.061606},

  url          = {https://www.osti.gov/biblio/22095528},
  journal      = {Physical Review. A},

  issn         = {1050-2947},

  number       = 6,

  volume       = 84,

  place        = {United States},

  year         = {2011},

  month        = {12}

}

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