Regimes of Quantum Degeneracy in Trapped 1D Gases

D. S. Petrov; G. V. Shlyapnikov; J. T. M. Walraven

doi:10.1103/PhysRevLett.85.3745

Regimes of Quantum Degeneracy in Trapped 1D Gases

D. S. Petrov, G. V. Shlyapnikov, and J. T. M. Walraven

Phys. Rev. Lett. 85, 3745 – Published 30 October 2000

Abstract

We discuss the regimes of quantum degeneracy in a trapped 1D gas and obtain the diagram of states. Three regimes have been identified: the Bose-Einstein condensation (BEC) regimes of a true condensate and quasicondensate, and the regime of a trapped Tonks gas (gas of impenetrable bosons). The presence of a sharp crossover to the BEC regime requires extremely small interaction between particles. We discuss how to distinguish between true and quasicondensates in phase coherence experiments.

Received 22 June 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.3745

Authors & Affiliations

D. S. Petrov^1,2, G. V. Shlyapnikov^1,2, and J. T. M. Walraven¹

¹FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands
²Russian Research Center, Kurchatov Institute, Kurchatov Square, 123182 Moscow, Russia