Phase transitions in an interacting boson model with near-neighbor repulsion

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.50.362· OSTI ID:7295876

Niyaz, P ^[1]; Scalettar, R T; Fong, C Y ^[2]; Batrouni, G G ^[3]

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1. Center for Nonlinear Studies, B258, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States) Physics Department, University of California, Davis, California 95616 (United States)
2. Physics Department, University of California, Davis, California 95616 (United States)
3. Thinking Machines Corporation, 245 First Street, Cambridge, Massachusetts 02142 (United States)

We study the order of the zero temperature quantum phase transitions at density [rho]=1 in the one-dimensional extended boson Hubbard model by examining the order parameter distribution and hysteresis effects. The phase diagram of the model at [rho]=1/2, a generalization of the spin-1/2 [ital XXZ] Hamiltonian, is also obtained, and the possibility of a supersolid region is discussed.

• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 7295876
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 50:1; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

665000* -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOSONS
CRYSTAL MODELS
DIAGRAMS
HUBBARD MODEL
HYSTERESIS
INTERACTIONS
MATHEMATICAL MODELS
ONE-DIMENSIONAL CALCULATIONS
ORDER PARAMETERS
PHASE DIAGRAMS
PHASE TRANSFORMATIONS