Theory of strongly interacting Fermi gases
- 12 August 2009
- journal article
- research article
- Published by Taylor & Francis Ltd in Journal of Modern Optics
- Vol. 56 (18), 2076-2081
- https://doi.org/10.1080/09500340903078984
Abstract
Ultra-cold atomic Fermi gases at nano-Kelvin temperatures provide a new paradigm for the foundations of quantum many-body theory. Here, we summarize our recent theoretical efforts to understand the intriguing properties of these strongly correlated Fermi gases. A number of powerful theoretical techniques have been developed, including (i) a quantitative diagrammatic theory taken to infinite order; (ii) a virial expansion at high temperature; (iii) exact solutions for one-dimensional many-body systems; and (iv) new quantum simulations using the Gaussian Fermi representation. We have employed these techniques to predict universal thermodynamics in the strongly interacting limit and exotic quantum superfluid phases with imbalanced spin populations. More insights into strongly interacting Fermi gases are anticipated, by extending the Gaussian Fermi simulations to new regimes.Keywords
This publication has 32 references indexed in Scilit:
- Theory of ultracold atomic Fermi gasesReviews of Modern Physics, 2008
- Many-body physics with ultracold gasesReviews of Modern Physics, 2008
- Equation of state of a superfluid Fermi gas in the BCS-BEC crossoverEurophysics Letters, 2006
- BCS–BEC crossover: From high temperature superconductors to ultracold superfluidsPhysics Reports, 2005
- BCS-BEC Crossover at Finite Temperature for Superfluid Trapped Fermi AtomsPhysical Review Letters, 2004
- Observation of a Strongly Interacting Degenerate Fermi Gas of AtomsScience, 2002
- BCS-BEC Crossover in a Gas of Fermi Atoms with a Feshbach ResonancePhysical Review Letters, 2002
- Properties of a Fermi liquid at the superfluid transition in the crossover region between BCS superconductivity and Bose-Einstein condensationPhysical Review B, 1994
- Crossover from BCS to Bose superconductivity: Transition temperature and time-dependent Ginzburg-Landau theoryPhysical Review Letters, 1993
- Bose condensation in an attractive fermion gas: From weak to strong coupling superconductivityJournal of Low Temperature Physics, 1985