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- Title
- Pseudogap pairing in ultracold fermi atoms
- Author(s)
- Hu, Hui; Liu, Xia-Ji; Drummond, Peter D.; Dong, Hui
- Abstract
- The Bose-Einstein condensate to Bardeen-Cooper-Schrieffer crossover in ultracold Fermi gases creates an ideal environment to enrich our knowledge of many-body systems. It is relevant to a wide range of fields from condensed matter to astrophysics. The nature of pairing in strongly interacting Fermi gases can be readily studied. This aids our understanding of related problems in high-Tc superconductors, whose mechanism is still under debate due to the large interaction parameter. Here, we calculate the dynamical properties of a normal, trapped strongly correlated Fermi gas, by developing a quantum cluster expansion. Our calculations for the single-particle spectral function agree with recent rf spectroscopy measurements, and clearly demonstrate pseudogap pairing in the strongly interacting regime.
- 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 Letters, Vol. 104, no. 24 (Jun 2010), paper no. 240407
- Publication year
- 2010
- FOR Code(s)
- 01 Mathematical Sciences; 02 Physical Sciences; 09 Engineering
- Keyword(s)
- Pseudogap pairing; Ultracold Fermi gases
- Publisher
- American Physical Society
- ISSN
- 0031-9007
- Publisher URL
- http://dx.doi.org/10.1103/PhysRevLett.104.240407
- Copyright
- Copyright © 2010 The American Physical Society. Published version of the paper reproduced here with the kind permission of the publisher for non-commercial purposes only.
- 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
