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.80.193104https://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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