Twocomponent Fermi vapour in a 2D rotating trap

Details Twocomponent Fermi vapour in a 2D rotating trap Twocomponent Fermi vapour in a 2D rotating trap

2001-05-13

arxiv.org/abs/cond-mat/0105252v1

Phys. Rev. A,64,053603(2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

25 latexed pages, 7 ps. figures

Scientific paper

10.1103/PhysRevA.64.053603

An exactly solvable model of two-component interacting Fermi vapour in two dimension within Thomas Fermi approach has been proposed. We assume a realistic off-diagonal s-wave interaction between fermions in the two hyperfine states. The interaction is taken to be given by a screened Coulomb interaction which is both relevant and is analytically tractable. There are two distinct limits in the case of trapped fermionic systems: When the rotating frequency is less than the trap frequency a Thomas-Fermi approach may be used for a reasonably large number of particles. In the case of rapidly rotating fermions, an alternative variational approach is used, where the local density approximation may be applied after projecting the system on to the lowest degenerate level. Analytic expressions for the relevant physical quantities are obtained and their significance is discussed in both these cases.

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