Quantum glass phases in the disordered Bose-Hubbard model.

Quantum glass phases in the disordered Bose-Hubbard model. Research Abstract Details 

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Quantum glass phases in the disordered Bose-Hubbard model. Abstract Text:

Pinaki Sengupta,Stephan Haas,

The phase diagram of the Bose-Hubbard model in the presence of off-diagonal disorder is determined using quantum Monte Carlo simulations. A sequence of quantum glass phases intervene at the interface between the Mott insulating and the superfluid phases of the clean system. In addition to the standard Bose glass phase, the coexistence of gapless and gapped regions close to the Mott insulating phase leads to a novel Mott glass regime which is incompressible yet gapless. Numerical evidence for the properties of these phases is given in terms of global (compressibility, superfluid stiffness) and local (compressibility, momentum distribution) observables.

Quantum glass phases in the disordered Bose-Hubbard model. Publishing Authors By Initials

P Sengupta,S Haas,

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Quantum glass phases in the disordered Bose-Hubbard model. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Physical review letters

VOLUME: 99

Page Numbers: 050403

Journal Abbreviation: Phys. Rev. Lett.

ISSN: 0031-9007

DAY: 2

MONTH: 08

YEAR: 2007

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LANGUAGE: eng

NlmUniqueID: 401141

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Grant and Affiliation Information for Quantum glass phases in the disordered Bose-Hubbard model.

AFFILIATION: T-CNLS and NHMFL, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.

Country: United States

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MEDLINETA: Phys Rev Lett

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