Advanced search

Found 4 essays matching the above criteria.

  1. 1. Beyond Mean-Field Description of Bose-Einstein Condensate

    University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Author : Daniel Larsson Persson; [2021]
    Keywords : Bose-Einstein condensate; BEC; dilute; non-uniform; quantum depletion; second quantisation; mean field; mean-field approximation; the Gross-Pitaevskii equation; Gross-Pitaevskii; perturbation theory; many-body perturbation theory; Rayleigh-Schrödinger perturbation theory; Rayleigh-Schrödinger; Epstein-Nesbet perturbation theory; Epstein-Nesbet; quantum ring; Physics and Astronomy;

    Abstract : This thesis work is on the theoretical description of dilute Bose-Einstein condensates (BEC) that are non-uniform, meaning that more than one single-particle state is occupied. This phenomenon is usually called quantum depletion. READ MORE

  3. 2. Inference of chromospheric magnetic fields with the Ca II 8542 line

    University essay from Uppsala universitet/Teoretisk astrofysik

    Author : Filip Jennerholm Hammar; [2014]
    Keywords : Sun: chromosphere; Sun: magnetic topology; polarization; weak field approximation;

    Abstract : Several techniques exist for retrieving and studying information about the properties of the Solar atmosphere from the polarization state of spectral lines. These are commonly called spectral diagnostics. READ MORE

  4. 3. Level Set Methods for Two-Phase Flows with FEM

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Deniz Kennedy; [2014]
    Keywords : ;

    Abstract : Two-phase flows is a branch of multiphase flows. The aim of the project is to implement two different level set methods and analyse and compare the numerical results. The level set method is used in order to represent the behaviour of the interface between two incompressible fluids in a flow. READ MORE

  5. 4. Automatic Segmentation of Skeleton in Whole-Body MR Images

    University essay from Institutionen för informationsteknologi

    Author : Anders Hedström; [2013]
    Keywords : ;

    Abstract : Magnetic Resonance Imaging(MRI) has developed as a widespread technique to examine various body parts and diagnose a wide range of diseases. MRI can often be superior to other imaging techniques such as Computed Tomography(CT) since it does not use ionizing radiation and can give a clearer image of soft tissue. READ MORE