Risultati scientifici

The dissipative Bose-Hubbard model

Anno: 2015

Autori: Kordas G., Witthaut D., Buonsante P., Vezzani A., Burioni R., Karanikas AI., Wimberger S.

Affiliazione autori: Univ Athens, Nucl & Particle Phys Sect, Dept Phys, GR-15771 Athens, Greece;‎ Forschungszentrum Julich, Inst Energy & Climate Res IEK STE, D-52428 Julich, Germany;‎ Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany;‎ QSTAR, INO CNR, I-50125 Florence, Italy;‎ LENS, I-50125 Florence, Italy;‎ CNR Ist Nanosci, S3, I-41125 Modena, Italy;‎ Univ Parma, Dipartimento Fis & Sci Terra, I-43124 Parma, Italy;‎ Ist Nazl Fis Nucl, Sez Milano Bicocca, Grp Coll Parma, Parma, Italy

Abstract: Open many-body quantum systems have attracted renewed interest in the context of quantum information science and quantum transport with biological clusters and ultracold atomic gases. The physical relevance in many-particle bosonic systems lies in the realization of counter-intuitive transport phenomena and the stochastic preparation of highly stable and entangled many-body states due to engineered dissipation. We review a variety of approaches to describe an open system of interacting ultracold bosons which can be modeled by a tight-binding Hubbard approximation. Going along with the presentation of theoretical and numerical techniques, we present a series of results in diverse setups, based on a master equation description of the dissipative dynamics of ultracold bosons in a one-dimensional lattice. Next to by now standard numerical methods such as the exact unravelling of the master equation by quantum jumps for small systems and beyond mean-field expansions for larger ones, we present a coherent-state path integral formalism based on Feynman-Vernon theory applied to a many-body context.

Giornale/Rivista: EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS

Volume: 224 (11)      Da Pagina: 2127  A: 2171

Parole chiavi: MEAN-FIELD THEORY; EINSTEIN CONDENSATION; SEMICLASSICAL APPROXIMATIONS; DISCRETE BREATHERS; NOBEL LECTURE; WAVE-FUNCTION; PHASE-SPACE; QUANTUM; ATOM; SUPERFLUID
DOI: 10.1140/epjst/e2015-02528-2

Citazioni: 41
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2021-12-05
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