Interaction-induced crossover versus finite-size condensation in a weakly interacting trapped one-dimensional Bose gas

Journal Article · Thu Mar 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.031606· OSTI ID:20982228

Bouchoule, I ^[1]; Kheruntsyan, K V ^[2]; Shlyapnikov, G V ^[3]

---

1. Laboratoire Charles Fabry, UMR 8501 du CNRS, 91 403 Orsay Cedex (France)
2. ARC Centre of Excellence for Quantum-Atom Optics, School of Physical Sciences, University of Queensland, Brisbane, Queensland 4072 (Australia)
3. Laboratoire de Physique Theorique et Modeles Statistiques, Universite Paris-Sud, 91405 Orsay Cedex (France)

We discuss the transition from a fully decoherent to a (quasi)condensate regime in a harmonically trapped weakly interacting one-dimensional (1D) Bose gas. By using analytic approaches and verifying them against exact numerical solutions, we find a characteristic crossover temperature and crossover atom number that depend on the interaction strength and the trap frequency. We then identify the conditions for observing either an interaction-induced crossover scenario or else a finite-size Bose-Einstein condensation phenomenon characteristic of an ideal trapped 1D gas.

• OSTI ID: 20982228
• Journal Information: Physical Review. A, Vol. 75, Issue 3; Other Information: DOI: 10.1103/PhysRevA.75.031606; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
BOSE-EINSTEIN CONDENSATION
BOSE-EINSTEIN GAS
BOSONS
CONDENSATES
INTERACTIONS
NUMERICAL ANALYSIS
NUMERICAL SOLUTION
ONE-DIMENSIONAL CALCULATIONS
QUANTUM DECOHERENCE
TRAPPING
TRAPS
WEAK INTERACTIONS