Pathway from condensation via fragmentation to fermionization of cold bosonic systems

Details Pathway from condensation via fragmentation to fermionization of cold bosonic systems Pathway from condensation via fragmentation to fermionization of cold bosonic systems

2005-02-08

arxiv.org/abs/cond-mat/0502187v1

Phys. Rev. Lett 95, 140402 (2005)

Physics

Condensed Matter

Other Condensed Matter

12 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.95.140402

For small scattering lengths, cold bosonic atoms form a condensate the density profile of which is smooth. With increasing scattering length, the density {\it gradually} acquires more and more oscillations. Finally, the number of oscillations equals the number of bosons and the system becomes {\it fermionized}. On this pathway from condensation to fermionization intriguing phenomena occur, depending on the shape of the trap. These include macroscopic fragmentation and {\it coexistence} of condensed and fermionized parts that are separated in space.

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