Density-functional theory of two-component Bose gases in one-dimensional harmonic traps

Details Density-functional theory of two-component Bose gases in one-dimensional harmonic traps Density-functional theory of two-component Bose gases in one-dimensional harmonic traps

2009-05-20

arxiv.org/abs/0905.3207v1

Phys. Rev. A 80, 043608 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 5 figures

Scientific paper

10.1103/PhysRevA.80.043608

We investigate the ground-state properties of two-component Bose gases confined in one-dimensional harmonic traps in the scheme of density-functional theory. The density-functional calculations employ a Bethe-ansatz-based local-density approximation for the correlation energy, which accounts for the correlation effect properly in the full physical regime. For the binary Bose mixture with spin-independent interaction, the homogeneous reference system is exactly solvable by the Bethe-ansatz method. Within the local-density approximation, we determine the density distribution of each component and study its evolution from Bose distributions to Fermi-like distribution with the increase in interaction. For the binary mixture of Tonks-Girardeau gases with a tunable inter-species repulsion, with a generalized Bose-Fermi transformation we show that the Bose mixture can be mapped into a two-component Fermi gas, which corresponds to exact soluble Yang-Gaudin model for the homogeneous system. Based on the ground-state energy function of the Yang-Gaudin model, the ground-state density distributions are calculated for various inter-species interactions. It is shown that with the increase in inter-species interaction, the system exhibits composite-fermionization crossover.

Affiliated with

Also associated with

No associations

Rating

Density-functional theory of two-component Bose gases in one-dimensional harmonic traps does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Density-functional theory of two-component Bose gases in one-dimensional harmonic traps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Density-functional theory of two-component Bose gases in one-dimensional harmonic traps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-242093