Fermionization and bosonization of expanding 1D anyonic fluids

Details Fermionization and bosonization of expanding 1D anyonic fluids Fermionization and bosonization of expanding 1D anyonic fluids

2008-05-25

arxiv.org/abs/0805.3786v1

Phys. Rev. A 78, 045602 (2008)

Physics

Condensed Matter

Statistical Mechanics

5 figures, 4 pages

Scientific paper

10.1103/PhysRevA.78.045602

The momentum distribution of an expanding cloud of one-dimensional hard-core anyons is studied by an exact numerical approach, and shown to become indistinguishable from that of a non-interacting spin-polarized Fermi gas for large enough times (dynamical fermionization). We also consider the expansion of one-dimensional anyons with strongly attractive short-range interactions suddenly released from a parabolic external potential, and find that momentum distribution approaches that of its dual system, the ideal Bose gas (dynamical bosonization). For both processes the characteristic time scales are identified, and the effect of the initial confinement is analyzed comparing the dynamics associated with both harmonic and hard-wall traps.

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