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Momentum distribution of the hard-core extended boson Hubbard model in one dimension

Title
Momentum distribution of the hard-core extended boson Hubbard model in one dimension
Author
차민철
Keywords
charge density waves; Hubbard model; Luttinger liquid; superfluidity; ANTIFERROMAGNETIC HEISENBERG CHAIN; GROUND-STATE; IMPENETRABLE BOSONS; ULTRACOLD ATOMS; SYSTEMS; GAS; TRANSITION; SUPERFLUID; INSULATOR; PHYSICS
Issue Date
2009-11
Publisher
AMERICAN PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v. 80, No. 19, Article no. 193104
Abstract
We investigate the momentum distribution associated with quantum phase transitions between a superfluid and a charge-density-wave state in the one-dimensional hard-core extended boson Hubbard model at half filling by using the Lanczos exact diagonalization method. The momentum distribution shows distinct features in different regions. At the Heisenberg point, it shows a universal behavior. In the superfluid phase, the Luttinger-liquid parameters are easily obtained from the finite-size scaling behaviors of the zero-momentum occupancy. Also the signature of a charge-density wave can be identified in the insulating phase.
URI
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.80.193104http://repository.hanyang.ac.kr/handle/20.500.11754/76625
ISSN
1098-0121
DOI
10.1103/PhysRevB.80.193104
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > PHOTONICS AND NANOELECTRONICS(나노광전자학과) > Articles
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