Boson-fermion mixtures inside an elongated cigar-shaped trap


Akdeniz Z., Vignolo P., Tosi M.

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, cilt.38, ss.2933-2943, 2005 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 38 Konu: 16
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1088/0953-4075/38/16/006
  • Dergi Adı: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
  • Sayfa Sayıları: ss.2933-2943

Özet

We present mean-field calculations of the equilibrium state in a gaseous mixture of bosonic and spin-polarized fermionic atoms with repulsive or attractive interspecies interactions, confined inside a cigar-shaped trap under conditions such that the radial thickness of the two atomic clouds is approaching the magnitude of the s-wave scattering lengths. In this regime, the kinetic pressure of the fermionic component is dominant. Full demixing under repulsive bosonfermion interactions can occur only when the number of fermions in the trap is below a threshold, and collapse under attractive interactions is suppressed within the range of validity of the mean-field model. Specific numerical illustrations are given for values of system parameters obtaining in Li-7-Li-6 clouds.