Browsing Department of Physics by browse.metadata.advisor "Avdeenkov, Alexander V."
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- ItemCrossovers and phase transitions in Bose-Fermi mixtures(Stellenbosch : Stellenbosch University, 2014-04) Kimene Kaya, Boniface Dimitri Christel; Avdeenkov, Alexander V.; Kriel, Johannes N.; Stellenbosch University. Faculty of Science. Dept. of Physics.ENGLISH ABSTRACT: We present a theoretical approach that allows for the description of trapped Bose-Fermi mixtures with a tunable interspecies interaction in the vicinity of a Feshbach resonance magnetic field.The many-body physics of the system is treated at equilibrium using the well-established mean-field and local density approximations. This reduces the physics locally to that of a homogeneous system. We observe a rich local phase structure exhibiting both first and second order phase transitions between the normal and BEC phases. We also consider the global properties of the mixture at a fixed number of particles and investigate how the density profiles and the populations of the various particle species depend on the detuning and trap profile.