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The European Physical Journal D

, Volume 8, Issue 1, pp 19–21 | Cite as

Metastability range of the Bose condensate in 7Li-fermion mixtures at T = 0

  • M. Amoruso
  • C. Minniti
  • M. P. Tosi
Article

Abstract

We evaluate the ground state of a mixture of bosons and spin-polarized fermions in the case of attractive boson-boson interactions, using a variational Ansatz for the Bose condensate wave function and the Thomas-Fermi approximation for the fermions in the mean field of the condensate. Within this approximation we show that the presence of the fermions tends to restrict the metastability range of the condensate, irrespectively of the sign of the boson-fermion interactions. Numerical illustrations are reported for mixtures of 7Li atoms with fermions having the 6Li mass.

PACS

03.75.Fi Phase coherent atomic ensembles; quantum condensation phenomena 67.40.Db Quantum statistical theory; ground state, elementary excitations 

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Copyright information

© Società Italiana di Fisica Springer-Verlag 2000

Authors and Affiliations

  1. 1.Istituto Nazionale di Fisica della Materia and Classe di ScienzeScuola Normale SuperiorePisaItaly

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