Europhys. Lett.
Volume 74, Number 6, June 2006
Page(s) 965 - 971
Section General
Published online 17 May 2006
Europhys. Lett., 74 (6), pp. 965-971 (2006)
DOI: 10.1209/epl/i2006-10061-5

Dynamics of a Tonks-Girardeau gas released from a hard-wall trap

A. del Campo and J. G. Muga

Departamento de Química-Física, Universidad del País Vasco Apdo. 644, Bilbao, Spain

received 1 February 2006; accepted in final form 25 April 2006
published online 17 May 2006

By using the Fermi-Bose map, we study the expansion dynamics of a Tonks-Girardeau gas released from a hard-wall trap. Exact analytical results are found for the density profile which differ from the density of a classical gas in the microcanonical ensemble for any observation time larger than a critical time associated with fermionization. Differences with the harmonic-trap case are discussed.

03.75.-b - Matter waves.
03.75.Kk - Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow.
05.30.Jp - Boson systems.

© EDP Sciences 2006