Mean-field description of ultracold bosons on disordered two-dimensional optical lattices
Anno: 2007
Autori: Buonsante P., Massel F., Penna V., Vezzani A.
Affiliazione autori: Dipartimento di Fisica, Torino Politecnico, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy; Dipartimento di Fisica, Universita degli Studi di Parma and CNR-INFM, Parco Area delle Scienze 7/a, I-43100 Parma, Italy
Abstract: In the present communication, we describe the properties induced by disorder on an ultracold gas of bosonic atoms loaded into a two-dimensional optical lattice with global confinement ensured by a parabolic potential. Our analysis is centred on the spatial distribution of the various phases, focusing particularly on the superfluid properties of the system as a function of external parameters and disorder amplitude. In particular, it is shown how disorder can suppress superfluidity, while partially preserving the system coherence.
Giornale/Rivista: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume: 40 (17) Da Pagina: F265 A: F273
Maggiori informazioni: Fast-track communicationParole chiavi: ultracold atoms; optical lattices; disordered system; superfluidity; DOI: 10.1088/0953-4075/40/17/F02Citazioni: 9dati 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