Quantum dynamics of coupled bosonic wells within the Bose-Hubbard picture
Anno: 2000
Autori: Franzosi R., Penna V., Zecchina R.
Affiliazione autori: Dipartimento di Fisica & Unità INFM, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy; Condensed Matter Section, International Center of Theoretical Physics, Strada Costiera 11, 34100 – Trieste, Italy
Abstract: We relate the quantum dynamics of the Bose-Hubbard model (BHM) to the semiclassical nonlinear equations that describe an array of interacting Bose condensates by implementing a standard variational procedure based on the coherent state method. We investigate the dynamics of the two-site BHM from the purely quantum viewpoint by recasting first the model within a spin picture and using then the related dynamical algebra. The latter allows us to study thoroughly the energy spectrum structure and to interpret quantally the classical symmetries of the two-site dynamics. The energy spectrum is also evaluated through various approximations relying on the coherent state approach.
Giornale/Rivista: INTERNATIONAL JOURNAL OF MODERN PHYSICS B
Volume: 14 (9) Da Pagina: 943 A: 961
Parole chiavi: adsorption; article; dynamics; energy; mathematical analysis; quantum mechanics; spectrumDOI: 10.1142/S0217979200001011Citazioni: 54dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui