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Two peaks in the momentum distribution of bosons in a weakly frustrated two-leg optical ladder
- Authors
- Cha, Min-Chul; Shin, Jong-Geun
- Issue Date
- May-2011
- Publisher
- AMER PHYSICAL SOC
- Keywords
- TRANSITION; GASES; MAGNETIC-FIELDS; ULTRACOLD ATOMS; NEUTRAL ATOMS; MOTT INSULATOR; LATTICES; PHYSICS; SUPERFLUID
- Citation
- PHYSICAL REVIEW A, v.83, no.5, pp.1 - 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW A
- Volume
- 83
- Number
- 5
- Start Page
- 1
- End Page
- 4
- ISSN
- 1050-2947
- Abstract
- The ground-state properties of neutral hard-core bosons trapped in an optical two-leg ladder in the presence of an artificial magnetic field are studied. For a weak field, two separated peaks appear in the momentum distribution as a signature of the Meissner state in which bosons, carrying persistent currents on each leg, condense into finite-momentum states, while for a strong field, a central peak and tiny bumps associated with the vortex lattice structure indicate that the ground state is the vortex state.
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Related Researcher
- Cha, Min Chul
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)