Dynamical instability in a trimeric chain of interacting Bose-Einstein condensates

Year: 2003

Authors: Buonsante P., Franzosi R., Penna V.

Autors Affiliation: Dipartimento di Fisica and U.d.R. I.N.F.M., Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy; Dipartimento di Fisica, Università degli Studi di Pisa and I.N.F.N., Sezione di Pisa, Via Buonarroti 2, I-56127 Pisa, Italy

Abstract: We analyze thoroughly the mean-field dynamics of a linear chain of three coupled Bose-Einstein condensates, where both the tunneling and the central-well relative depth are adjustable parameters. Owing to its nonintegrability, entailing a complex dynamics with chaos occurrence, this system is a paradigm for longer arrays whose simplicity still allows a thorough analytical study. We identify the set of dynamics fixed points, along with the associated proper modes, and establish their stability character depending on the significant parameters. As an example of the remarkable operational value of our analysis, we point out some macroscopic effects that seem viable to experiments.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 90 (5)      Pages from: 050404-1  to: 050404-4

KeyWords: Approximation theory; Computer simulation; Condensation; Electron tunneling; Hamiltonians; Mathematical models; Quantum theory, Bose-Einstein condensates; Dynamical instability; Macroscopic effects; Space mode approximation, Molecular dynamics
DOI: 10.1103/PhysRevLett.90.050404

Citations: 59
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