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Quantitative comparison between theoretical predictions and experimental results for Bragg spectroscopy of a strongly interacting Fermi superfluid
List of Titles
Quantitative comparison between theoretical predictions and experimental results for Bragg spectroscopy of a strongly interacting Fermi superfluid
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/155364
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- Title
- Quantitative comparison between theoretical predictions and experimental results for Bragg spectroscopy of a strongly interacting Fermi superfluid
- Author(s)
- Zou, Peng; Kuhnle, Eva D.; Vale, Chris J.; Hu, Hui
- Abstract
- Theoretical predictions for the dynamic structure factor of a harmonically trapped Fermi superfluid near the Bose-Einstein condensate-Bardeen-Cooper-Schrieffer (BEC-BCS) crossover are compared with recent Bragg spectroscopy measurements at large transferred momenta. The calculations are based on a random-phase (or time-dependent Hartree-Fock-Gorkov) approximation generalized to the strongly interacting regime. Excellent agreement with experimental spectra at low temperatures is obtained, with no free parameters. Theoretical predictions for zero-temperature static structure factor are also found to agree well with the experimental results and independent theoretical calculations based on the exact Tan relations. The temperature dependence of the structure factors at unitarity is predicted.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy
- Source
- Physical Review A, Vol. 82, no. 6 (Dec 2010), article no. 061605
- Publication year
- 2010
- FOR Code(s)
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics; 0204 Condensed Matter Physics; 0205 Optical Physics
- Keyword(s)
- Equation-of-state; Gas; Thermodynamics
- Publisher
- American Physical Society
- ISSN
- 1050-2947
- Publisher URL
- http://dx.doi.org/10.1103/PhysRevA.82.061605
- Copyright
- Copyright © 2010 The American Physical Society. The published version of the paper is reproduced here with the kind permission of the publisher.
- Research Projects
-
Ultracold atomic Fermi gases in the strongly interacting regime: a new frontier of quantum many-body physics, Australian Research Council grant number DP0984522
Imbalanced superfluidity: the quantum mystery that defies solution, Australian Research Project grant number DP0984637
- Full text
- Peer reviewed
