On the spin asymmetry of ground states in trapped two-component Fermi gases with repulsive interactions
arXiv:cond-mat/0702600 · doi:10.1088/0953-4075/40/13/010
Abstract
We examine the spin asymmetry of ground states for two-dimensional, harmonically trapped two-component gases of fermionic atoms at zero temperature with weakly repulsive short range interactions. Our main result is that, in contrast to the three-dimensional case, in two dimensions a non-trivial spin-asymmetric phase can only be caused by shell structure. A simple, qualitative description is given in terms of an approximate single particle model, comparing well to the standard results of Hartree-Fock or direct diagonalization methods.
References in corpus (18)
- Observation of resonance condensation of fermionic atom pairs
- Observation of a Strongly-Interacting Degenerate Fermi Gas of Atoms
- Observation of Bose-Einstein Condensation of Molecules
- Fermionic Superfluidity with Imbalanced Spin Populations and the Quantum Phase Transition to the Normal State
- Universal Thermodynamics of Degenerate Quantum Gases in the Unitarity Limit
- Heat Capacity of a Strongly-Interacting Fermi Gas
- Measurement of positive and negative scattering lengths in a Fermi gas of atoms
- All-Optical Production of a Degenerate Fermi Gas
- Spin 1/2 Fermions in the Unitary Regime: A Superfluid of a New Type
- Phase diagram of a strongly interacting polarized Fermi gas in one dimension
- Fifty-fold improvement in the number of quantum degenerate fermionic atoms
- Itinerant Ferromagnetism in an Ultracold Atom Fermi Gas
- Evaporative Cooling of a Two-Component Degenerate Fermi Gas
- Magnetic field control of elastic scattering in a cold gas of fermionic lithium atoms
- Collective ferromagnetism in two-component Fermi-degenerate gas trapped in finite potential
- Thermodynamics of Multi-Component Fermi Vapors
- Some exact results for a trapped quantum gas at finite temperature
- Supershell structure in trapped dilute Fermi gases