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Momentum Distribution in a One-Dimensional Bose-Hubbard Model at Incommensurate Fillings
- Authors
- Cha, Min-Chul
- Issue Date
- Jul-2010
- Publisher
- SPRINGER
- Keywords
- Momentum distribution; Luttinger liquid; Superfluid-insulator transition
- Citation
- JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, v.23, no.5, pp.725 - 728
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
- Volume
- 23
- Number
- 5
- Start Page
- 725
- End Page
- 728
- ISSN
- 1557-1939
- Abstract
- We study the momentum distribution of the hard-core extended Bose-Hubbard model at incommensurate fillings in one dimension. From the finite-size scaling behavior of the zero-momentum occupancy, the Luttinger liquid parameters are obtained as a function of interaction strength and filling. The curvature of the momentum distribution shows distinction between the easy-plane and the easy-axis region, and the occupancy at the zone boundary indicates the filling fraction.
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Related Researcher
- Cha, Min Chul
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)