Supersolid and solitonic phases in the one-dimensional extended Bose-Hubbard model

Journal Article · Thu Oct 15 04:00:00 EDT 2009 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.80.043614· OSTI ID:21316451

Mishra, Tapan; Pai, Ramesh V; Ramanan, S; Luthra, Meetu Sethi; Das, B P ^[1]

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1. Indian Institute of Astrophysics, II Block, Koramangala, Bangalore 560 034 (India)

We report our findings on the quantum phase transitions in cold bosonic atoms in a one-dimensional optical lattice using the finite-size density-matrix renormalization-group method in the framework of the extended Bose-Hubbard model. We consider wide ranges of values for the filling factors and the nearest-neighbor interactions. At commensurate fillings, we obtain two different types of charge-density wave phases and a Mott insulator phase. However, departure from commensurate fillings yields the exotic supersolid phase where both the crystalline and the superfluid orders coexist. In addition, we obtain the signatures for the solitary waves and the superfluid phase.

• OSTI ID: 21316451
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 80; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
BOSONS
CHARGE DENSITY
DENSITY MATRIX
HUBBARD MODEL
INTERACTIONS
ONE-DIMENSIONAL CALCULATIONS
PHASE TRANSFORMATIONS
RENORMALIZATION
SOLIDS
SOLITONS
SUPERFLUIDITY