Ground-state properties of trapped Bose-Fermi mixtures: Role of exchange correlation
- 19 June 2003
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 67 (6) , 063606
- https://doi.org/10.1103/physreva.67.063606
Abstract
We introduce density-functional theory for inhomogeneous Bose-Fermi mixtures, derive the associated Kohn-Sham equations, and determine the exchange-correlation energy in local-density approximation. We solve numerically the Kohn-Sham system, and determine the boson and fermion density distributions and the ground-state energy of a trapped, dilute mixture beyond mean-field approximation. The importance of the corrections due to exchange correlation is discussed by a comparison with current experiments; in particular, we investigate the effect of the repulsive potential-energy contribution due to exchange correlation on the stability of the mixture against collapse.Keywords
All Related Versions
This publication has 20 references indexed in Scilit:
- Fermi-Bose Quantum DegenerateMixture with Attractive InteractionPhysical Review Letters, 2002
- Boson-induced-wave pairing in dilute boson-fermion mixturesPhysical Review A, 2002
- Two-Species Mixture of Quantum Degenerate Bose and Fermi GasesPhysical Review Letters, 2002
- Phonon Spectrum and Dynamical Stability of a Dilute Quantum Degenerate Bose-Fermi MixturePhysical Review Letters, 2002
- Quasipure Bose-Einstein Condensate Immersed in a Fermi SeaPhysical Review Letters, 2001
- Collective modes in a dilute Bose-Fermi mixturePhysical Review A, 2001
- Observation of Fermi Pressure in a Gas of Trapped AtomsScience, 2001
- Influence of Induced Interactions on the Superfluid Transition in Dilute Fermi GasesPhysical Review Letters, 2000
- Zero-temperature phase diagram of binary boson-fermion mixturesPhysical Review A, 2000
- Phonon exchange in dilute Fermi-Bose mixtures: Tailoring the Fermi-Fermi interactionPhysical Review A, 2000