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Title: Competing phases, phase separation, and coexistence in the extended one-dimensional bosonic Hubbard model

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [3];  [4]
  1. Univ. of Nice (France). Non-Linear Institute of Nice (INLN); Inst. Univ. of France, Paris (France); National Univ. of Singapore (Singapore). Centre for Quantum Technologies
  2. Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Physics and Astronomy
  3. Univ. of California, Davis, CA (United States). Physics Dept.
  4. National Univ. of Singapore (Singapore). Centre for Quantum Technologies; Ecole Normale Superieure, Paris (France); CNRS-UNS-NUS-NTU International Joint Research Unit (Singapore). Merlion MajuLab; National Univ. of Singapore (Singapore). Dept. of Physics
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Here, we study the phase diagram of the one-dimensional bosonic Hubbard model with contact (U) and near neighbor (V ) interactions focusing on the gapped Haldane insulating (HI) phase which is characterized by an exotic nonlocal order parameter. The parameter regime (U, V and μ) where this phase exists and how it competes with other phases such as the supersolid (SS) phase, is incompletely understood. We use the Stochastic Green Function quantum Monte Carlo algorithm as well as the density matrix renormalization group to map out the phase diagram. The HI exists only at = 1, the SS phase exists for a very wide range of parameters (including commensurate fillings) and displays power law decay in the one body Green function were our main conclusions. Additionally, we show that at fixed integer density, the system exhibits phase separation in the (U, V ) plane.

Research Organization:
Univ. of California, Davis, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0001842; NA0001842-0
OSTI ID:
1344111
Alternate ID(s):
OSTI ID: 1180554
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 90, Issue 20; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (3)

Supersolid and pair correlations of the extended Jaynes-Cummings-Hubbard model on triangular lattices journal September 2019
Supersolid and pair correlations of the extended Jaynes-Cummings-Hubbard model on triangular lattices text January 2016
Glassy Dynamics from Quark Confinement: Atomic Quantum Simulation of Gauge-Higgs Model on Lattice text January 2019

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY