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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/23842
Title: 
Mixing-demixing transition and collapse of a vortex state in a quasi-two-dimensional boson-fermion mixture
Author(s): 
Institution: 
  • Universidade Estadual Paulista (UNESP)
  • Univ Padua
ISSN: 
1050-2947
Abstract: 
We investigate the mixing-demixing transition and the collapse in a quasi-two-dimensional degenerate boson-fermion mixture (DBFM) with a bosonic vortex. We solve numerically a quantum-hydrodynamic model based on a new density functional which accurately takes into account the dimensional crossover. It is demonstrated that with the increase of interspecies repulsion, a mixed state of DBFM could turn into a demixed state. The system collapses for interspecies attraction above a critical value which depends on the vortex quantum number. For interspecies attraction just below this critical limit there is almost complete mixing of boson and fermion components. Such mixed and demixed states of a DBFM could be experimentally realized by varying an external magnetic field near a boson-fermion Feshbach resonance, which will result in a continuous variation of interspecies interaction.
Issue Date: 
1-May-2007
Citation: 
Physical Review A. College Pk: Amer Physical Soc, v. 75, n. 5, 9 p., 2007.
Time Duration: 
9
Publisher: 
Amer Physical Soc
Source: 
http://dx.doi.org/10.1103/PhysRevA.75.053603
URI: 
http://hdl.handle.net/11449/23842
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/23842
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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