Localization in interacting, disordered, Bose systems

Journal Article · Mon Jun 17 00:00:00 EDT 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.66.3144· OSTI ID:5633872

Scalettar, R T; Batrouni, G G; Zimanyi, G T ^[1]

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1. Department of Physics, University of California, Davis, California 95616 (US) Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550

We use quantum Monte Carlo techniques to study a one-dimensional, disordered, interacting, Bose Hamiltonian. The effect of disorder on the Mott-insulator portion of the phase diagram is determined. We observe the destruction of superfluidity by disorder at incommensurate densities, for the first time demonstrating the emergence of a Bose-glass'' phase. In addition to these strong-coupling phases, we observe an unanticipated re-entrance into an Anderson-type localized regime for weak couplings.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5633872
• Journal Information: Physical Review Letters; (USA), Vol. 66:24; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOSE-EINSTEIN CONDENSATION
DIAGRAMS
BOSONS
GLASS
HAMILTONIANS
MONTE CARLO METHOD
ONE-DIMENSIONAL CALCULATIONS
ORDER-DISORDER TRANSFORMATIONS
SUPERFLUIDITY
MATHEMATICAL OPERATORS
PHASE TRANSFORMATIONS
QUANTUM OPERATORS
657002* - Theoretical & Mathematical Physics- Classical & Quantum Mechanics
640450 - Fluid Physics- Superfluidity