Sökning: "HFB"

Hittade 4 uppsatser innehållade ordet HFB.

  1. 1. Symmetry restoration of HFB states using projection

    Uppsats för yrkesexamina på grundnivå, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Författare :Carl Frostenson; [2019]
    Nyckelord :Symmetry restoration; Projection; HFB; nuclear physics; nuclear; Physics and Astronomy;

    Sammanfattning : The restoration of particle number and angular momentum symmetry using projection operators has been theoretically investigated for mean-field Hartree-Fock-Bogoliubov (HFB) states. A computer code for the projection of particle number was then implemented. LÄS MER

  3. 2. A mean-field approach to attractive few-body Fermi gas

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk fysik

    Författare :Morten Piibeleht; [2016]
    Nyckelord :HFB; hartree-fock-bogoliubov; fermi gas; higgs mode; QRPA; quasiparticles; random phase approximation; Physics and Astronomy;

    Sammanfattning : Quantum many-body systems can be studied theoretically from first principles using microscopic models, but the computational cost of numerically exact calculations increases exponentially with the number of particles and the complexity of the interaction, limiting the systems that can be analysed. The Hartree-Fock-Bogoliubov (HFB) and quasiparticle random phase approximation (QRPA) methods, heavily used in nuclear physics, rely on mean-field approximations but scale more favourably with increasing system size and complexity. LÄS MER

  4. 3. Utvärdering av odränerad skjuvhållfasthet på för lermorän ur hejarsondering

    Kandidat-uppsats, Lunds universitet/LTH Ingenjörshögskolan vid Campus Helsingborg

    Författare :Mohamad Fakhro; [2016]
    Nyckelord :lermorän; cpt; hejarsondering; skjuvhållfasthet; Technology and Engineering;

    Sammanfattning : The aim of the study is to find a relation between the tip pressure produced by ram sounding and CPT in order to improve the possibilities of determining the shear strength of clay till. CPT is a pressure probe and mainly used to get a good picture of the statigraphy and the soil condition. LÄS MER

  5. 4. The Sales & Supply process: factors leading to deviations

    Master-uppsats, Lunds universitet/Teknisk logistik

    Författare :Susanne Johansson; [2015]
    Nyckelord :Sales and Operation Planning; Knowledge; Roles responsibilities; Deviations in the balancing of demand and supply; Information sharing; Business and Economics;

    Sammanfattning : This is a project that have been conduct at IKEA of Sweden in Älmhult. Due to the limitation of time for this project, the study has only been conduct for one several Home Furnisher Business (HFB) within IKEA. LÄS MER