Landau-Zener tunneling of Bose-Einstein condensates in an optical lattice

Journal Article · Mon Aug 15 04:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.023611· OSTI ID:20718189

Konotop, V V ^[1]; Kevrekidis, P G ^[2]; Salerno, M ^[3]

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1. Centro de Fisica Teorica e Computacional, Universidade de Lisboa, Complexo Interdisciplinar, Av. Prof. Gama Pinto 2, Lisbon 1649-003, Portugal and Departamento de Fisica, Universidade de Lisboa, Campo Grande, Ed. C8, Piso 6, Lisbon 1749-016 (Portugal)
2. Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515 (United States)
3. Dipartimento di Fisica 'E. R. Caianiello', Universita di Salerno, I-84081 Baronissi, SA (Italy)

A theory of the nonsymmetric Landau-Zener tunneling of Bose-Einstein condensates in deep optical lattices is presented. It is shown that periodic exchange of matter between the bands is described by a set of linearly coupled nonlinear Schroedinger equations. The key role of the modulational instability in rendering the interband transitions irreversible is highlighted.

• OSTI ID: 20718189
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BOSE-EINSTEIN CONDENSATION
INSTABILITY
LANDAU-ZENER FORMULA
NONLINEAR PROBLEMS
PERIODICITY
SCHROEDINGER EQUATION
TUNNEL EFFECT