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One-dimensional pha...
One-dimensional phase transitions in a two-dimensional optical lattice
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- Rehn, Magnus, 1972- (author)
- Umeå universitet,Institutionen för fysik
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- Bergkvist, S. (author)
- Condensed Matter Theory, Department of Theoretical Physics, AlbaNova University Center, KTH, 106 91 Stockholm, Sweden
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- Rosengren, Anders (author)
- KTH,Kondenserade materiens teori,Condensed Matter Theory, Department of Theoretical Physics, AlbaNova University Center, KTH, 106 91 Stockholm, Sweden, NORDITA, AlbaNova University Center, 106 91 Stockholm, Sweden
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- Saers, Robert, 1977- (author)
- Umeå universitet,Institutionen för fysik
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- Zelán, Martin, 1981- (author)
- Umeå universitet,Institutionen för fysik
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Lundh, E. (author)
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- Kastberg, Anders, 1963- (author)
- Umeå universitet,Institutionen för fysik
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(creator_code:org_t)
- 2008-08-02
- 2008
- English.
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In: European Physical Journal D. - : Springer Science and Business Media LLC. - 1434-6060 .- 1434-6079. ; 49:2, s. 223-230
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Abstract
Subject headings
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- A phase transition for bosonic atoms in a two-dimensional anisotropic optical lattice is considered. If the tunnelling rates in two directions are different, the system can undergo a transition between a two-dimensional superfluid and a one-dimensional Mott insulating array of strongly coupled tubes. The connection to other lattice models is exploited in order to better understand the phase transition. Critical properties are obtained using quantum Monte Carlo calculations. These critical properties are related to correlation properties of the bosons and a criterion for commensurate filling is established.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- bose-hubbard model
- xy model
- superfluid
- atoms
- mott
- insulator
- gases
- Atomic physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Rehn, Magnus, 19 ...
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Bergkvist, S.
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Rosengren, Ander ...
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Saers, Robert, 1 ...
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Zelán, Martin, 1 ...
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Lundh, E.
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Kastberg, Anders ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
- Articles in the publication
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European Physica ...
- By the university
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Royal Institute of Technology
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Umeå University