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      Dimensional crossover in two-dimensional Bose-Fermi mixtures

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      Author
      Subaşi, A. L.
      Sevinçli, S.
      Vignolo, P.
      Tanatar, Bilal
      Date
      2010
      Source Title
      Laser Physics
      Print ISSN
      1054-660X
      Electronic ISSN
      1555-6611
      Publisher
      Institute of Physics Publishing
      Volume
      20
      Issue
      3
      Pages
      683 - 693
      Language
      English
      Type
      Article
      Item Usage Stats
      140
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      118
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      Abstract
      We investigate the equilibrium properties of boson-fermion mixtures consisting of a Bose condensate and spin-polarized Fermi gas confined in a harmonic two-dimensional (2D) trap using mean-field theory. Boson-boson and boson-fermion coupling constants have a logarithmic dependence on the density because of the two-dimensional scattering events when the s-wave scattering lengths are on the order of mixture thickness. We show that this modifies the density profiles significantly. It is also shown that the dimensional crossover stabilizes the mixture against collapse and spatial demixing is observed for the case of a negative boson-fermion scattering length.
      Keywords
      Bose condensates
      Bose-fermi mixtures
      Boson fermions
      Boson-fermion mixtures
      Coupling constants
      De-mixing
      Density profile
      Dimensional crossover
      Equilibrium properties
      Fermi gas
      Logarithmic dependence
      S-wave scattering lengths
      Scattering length
      Spin-polarized
      Two-dimensional scattering
      Bosons
      Electron gas
      Gas condensates
      High energy physics
      Mean field theory
      Mixtures
      Scattering
      Two dimensional
      Fermions
      Permalink
      http://hdl.handle.net/11693/22404
      Published Version (Please cite this version)
      http://dx.doi.org/10.1134/S1054660X1005018X
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      • Department of Physics 2299
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