Density and stability in ultracold dilute boson-fermion mixtures

2007/03/31 by Steffen Roethel, Steffen Röthel, Axel Pelster
Physics and Astronomy · #Boson #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Fermi Gamma-ray Space Telescope #Fermion #Limit (mathematics) #Mean field theory #Particle (ecology) #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum mechanics #Quantum, superfluid, helium dynamics #Scattering #Scattering length #Stability (learning theory) #Ultracold atom #cond-mat.stat-mech

paper · pdf · doi:10.1140/epjb/e2007-00288-x

published as European Physical Journal B 59, 343 (2007) · Author Information under http://www.theo-phys.uni-essen.de/tp/ags/pelster_dir/

openalex publication_date 2007/10/01 · arxiv created 2008/01/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We analyze in detail recent experiments on ultracold dilute 87Rb-40K mixtures in Hamburg and in Florence within a mean-field theory. To this end we determine how the stationary bosonic and fermionic density profiles in this mixture depend in the Thomas-Fermi limit on the respective particle numbers. Furthermore, we investigate how the observed stability of the Bose-Fermi mixture with respect to collapse is crucially related to the value of the interspecies s-wave scattering length.

Citations

• Mean-field instability of trapped dilute boson-fermion mixtures
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