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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
C.C. Bradley, C.A. Sackett, J.J. Tollett, R.G. Hulet, Phys. Rev. Lett. 75, 1687 (1995); ibid. 79, 1170 (1997).
C.C. Bradley, C.A. Sackett, R.G. Hulet, Phys. Rev. Lett. 78, 985 (1997).
E.R.I. Abraham, W.I. McAlexander, C.A. Sackett, R.G. Hulet, Phys. Rev. Lett. 74, 1315 (1995); E.R.I. Abraham, W.I. McAlexander, J.M. Greton, R.G. Hulet, R. Coté, Phys. Rev. A 55, R3299 (1997).
A.L. Fetter, J.D. Walecka, Quantum Theory of Many-Particle Systems (McGraw-Hill, New York 1971).
P.A. Ruprecht, M.J. Holland, K. Burnett, M. Edwards, Phys. Rev. A 51, 4704 (1995); G. Baym, C. Pethick, Phys. Rev. Lett. 76, 6 (1996); Y. Kagan, G.V. Shlyapnikov, J.T.M. Walraven, Phys. Rev. Lett. 76, 2670 (1996); F. Dalfovo, S. Stringari, Phys. Rev. A 53, 2477 (1996); R.J. Dodd, M. Edwards, C.J. Williams, C.W. Clark, M.J. Holland, P.A. Ruprecht, K. Burnett, Phys. Rev. A 54, 661 (1996).
E.V. Shuryak, Phys. Rev. A 54, 3151 (1996); M. Ueda, A.J. Leggett, Phys. Rev. Lett. 80, 1576 (1997).
M. Houbiers, H.T.C. Stoof, Phys. Rev. A 54, 5055 (1996).
W.I. McAlexander, E.R.I. Abraham, N.W.M. Ritchie, C.J. Williams, H.T.C. Stoof, R.G. Hulet, Phys. Rev. A 51, R871 (1995).
F.S. Cataliotti, E.A. Cornell, C. Fort, M. Inguscio, F. Marin, M. Prevedelli, L. Ricci, G.M. Tino, Phys. Rev. A 57, 1136 (1998).
K. Mølmer, Phys. Rev. Lett. 80, 1804 (1998).
M. Amoruso, A. Minguzzi, S. Stringari, M.P. Tosi, L. Vichi, Eur. Phys. J. D 4, 261 (1998).
H.T.C. Stoof, M. Houbiers, cond-mat/9808171.
D.A. Butts, D.S. Rokhsar, Phys. Rev. A 55, 4346 (1997); J. Schneider, H. Wallis, Phys. Rev. A 57, 1253 (1998).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Amoruso, M., Minniti, C. & Tosi, M.P. Metastability range of the Bose condensate in 7Li-fermion mixtures at T = 0. Eur. Phys. J. D 8, 19–21 (2000). https://doi.org/10.1007/s100530050004
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s100530050004