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Title: Quantum Phases of the Extended Bose-Hubbard Hamiltonian: Possibility of a Supersolid State of Cold Atoms in Optical Lattices

Abstract

Cold atom optical lattices typically simulate zero-range Hubbard models. We discuss the theoretical possibility of using excited states of optical lattices to generate extended range Hubbard models. We find that bosons confined to higher bands of optical lattices allow for a rich phase diagram, including the supersolid phase. Using Gutzwiller, mean-field theory we establish the parameter regime necessary to maintain metastable states generated by an extended Bose-Hubbard model.

Authors:
;  [1]
  1. Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742-4111 (United States)
Publication Date:
OSTI Identifier:
20696450
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 95; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevLett.95.033003; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; BOSE-EINSTEIN CONDENSATION; BOSONS; HAMILTONIANS; HUBBARD MODEL; MEAN-FIELD THEORY; METASTABLE STATES; PHASE DIAGRAMS

Citation Formats

Scarola, V W, and Das Sarma, S. Quantum Phases of the Extended Bose-Hubbard Hamiltonian: Possibility of a Supersolid State of Cold Atoms in Optical Lattices. United States: N. p., 2005. Web. doi:10.1103/PhysRevLett.95.033003.
Scarola, V W, & Das Sarma, S. Quantum Phases of the Extended Bose-Hubbard Hamiltonian: Possibility of a Supersolid State of Cold Atoms in Optical Lattices. United States. https://doi.org/10.1103/PhysRevLett.95.033003
Scarola, V W, and Das Sarma, S. 2005. "Quantum Phases of the Extended Bose-Hubbard Hamiltonian: Possibility of a Supersolid State of Cold Atoms in Optical Lattices". United States. https://doi.org/10.1103/PhysRevLett.95.033003.
@article{osti_20696450,
title = {Quantum Phases of the Extended Bose-Hubbard Hamiltonian: Possibility of a Supersolid State of Cold Atoms in Optical Lattices},
author = {Scarola, V W and Das Sarma, S},
abstractNote = {Cold atom optical lattices typically simulate zero-range Hubbard models. We discuss the theoretical possibility of using excited states of optical lattices to generate extended range Hubbard models. We find that bosons confined to higher bands of optical lattices allow for a rich phase diagram, including the supersolid phase. Using Gutzwiller, mean-field theory we establish the parameter regime necessary to maintain metastable states generated by an extended Bose-Hubbard model.},
doi = {10.1103/PhysRevLett.95.033003},
url = {https://www.osti.gov/biblio/20696450}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 3,
volume = 95,
place = {United States},
year = {2005},
month = {7}
}