Ground State Properties of Fermi Gases in the Strongly Interacting Regime

Details Ground State Properties of Fermi Gases in the Strongly Interacting Regime Ground State Properties of Fermi Gases in the Strongly Interacting Regime

2004-09-12

arxiv.org/abs/physics/0409060v2

Phys. Rev. Lett. 95, 080402 (2005)

Physics

Atomic Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.080402

The ground state energies and pairing gaps in dilute superfluid Fermi gases have now been calculated with the quantum Monte Carlo method without detailed knowledge of their wave functions. However, such knowledge is essential to predict other properties of these gases such as density matrices and pair distribution functions. We present a new and simple method to optimize the wave functions of quantum fluids using Green's function Monte Carlo method. It is used to calculate the pair distribution functions and potential energies of Fermi gases over the entire regime from atomic Bardeen-Cooper-Schrieffer superfluid to molecular Bose-Einstein condensation, spanned as the interaction strength is varied.

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