Ultracold Bose Gases in 1D Disorder: From Lifshits Glass to Bose-Einstein Condensate

Journal Article · Fri Apr 27 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.170403· OSTI ID:20951265

Lugan, P; Clement, D; Bouyer, P; Aspect, A; Sanchez-Palencia, L ^[1]; Lewenstein, M ^[2]

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1. Laboratoire Charles Fabry de l'Institut d'Optique, CNRS and Univ. Paris-Sud, Campus Polytechnique, RD 128, F-91127 Palaiseau cedex (France)
2. ICREA and ICFO-Institut de Ciencies Fotoniques, Parc Mediterrani de la Tecnologia, E-08860 Castelldefels (Barcelona) (Spain)

We study an ultracold Bose gas in the presence of 1D disorder for repulsive interatomic interactions varying from zero to the Thomas-Fermi regime. We show that for weak interactions the Bose gas populates a finite number of localized single-particle Lifshits states, while for strong interactions a delocalized disordered Bose-Einstein condensate is formed. We discuss the schematic quantum-state diagram and derive the equations of state for various regimes.

• OSTI ID: 20951265
• Journal Information: Physical Review Letters, Vol. 98, Issue 17; Other Information: DOI: 10.1103/PhysRevLett.98.170403; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
BOSE-EINSTEIN GAS
EQUATIONS OF STATE
PHASE DIAGRAMS
STRONG INTERACTIONS
THOMAS-FERMI MODEL
WEAK INTERACTIONS