2007/11/30 by Qi Zhang, Peter Hänggi, Peter Hanggi +1 · 2 citations
Physics and Astronomy · #Adiabatic process #Bose–Einstein condensate #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Degenerate energy levels #Eigenvalues and eigenvectors #Hamiltonian (control theory) #Nonlinear system #Physics #Quantum electrodynamics #Quantum mechanics #Quantum optics and atomic interactions #Quantum tunnelling #Strong Light-Matter Interactions #Symmetry breaking #Trapping #cond-mat.stat-mech #quant-ph
paper · pdf · doi:10.1103/physreva.77.053607
published as Phys. Rev. A 77, 053607 (2008) · 5 pages, 3 figures, revised version, to appear in Phys. Rev. A
arxiv created 2008/04/17 · openalex publication_date 2008/05/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A two-mode Bose-Einstein condensate coupled by a high-frequency modulation field is found to display rich features. An effective stationary Hamiltonian approach reveals the emergence of additional degenerate eigenstates as well as additional topological structures of the spectrum. Possible applications, such as the suppression of nonlinear Landau-Zener tunneling, are discussed. An interesting phenomenon, which we call ``deterministic symmetry-breaking trapping'' associated with separatrix crossing, is also found in an adiabatic process.