Thesis (MSc)--Stellenbosch University, 2014. / 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. / AFRIKAANSE OPSOMMING: Ons beskou ’n teoretiese beskrywing van gevangde Bose-Fermi mengsels met ’n verstelbare interspesie
wisselwerking in die teenwoordigheid van ’n magneties-geïnduseerde Feshbach resonansie.
Die veeldeeltjiefisika van die sisteem word by ekwilibrium binne die welbekende gemiddelde-veld
en lokale-digtheid benaderings hanteer. Sodoende word die fisika lokaal tot die van ’n homogene
sisteem gereduseer. Ons neem ’n ryk fase-struktuur waar met beide eerste- en tweede-orde
fase-oorgange tussen die normale en BEK fases. Ons beskou ook die globale eienskappe van die
mengsel by ’n vaste totale aantal deeltjies en ondersoek hoe die digtheidsprofiele en deeltjiegetalle
van die afstemming en die profiel van die val afhang.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/86471 |
| Date | 04 1900 |
| Creators | Kimene Kaya, Boniface Dimitri Christel |
| Contributors | Avdeenkov, Alexander V., Kriel, Johannes N., Stellenbosch University. Faculty of Science. Dept. of Physics. |
| Publisher | Stellenbosch : Stellenbosch University |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | Unknown |
| Type | Thesis |
| Format | viii, 61 p. |
| Rights | Stellenbosch University |
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