Tölle, Simon: Few-Body Systems in a Shell-Model Approach. - Bonn, 2014. - Dissertation, Rheinische Friedrich-Wilhelms-Universität Bonn.
Online-Ausgabe in bonndoc: https://nbn-resolving.org/urn:nbn:de:hbz:5n-35150
urn: https://nbn-resolving.org/urn:nbn:de:hbz:5n-35150,
author = {{Simon Tölle}},
title = {Few-Body Systems in a Shell-Model Approach},
school = {Rheinische Friedrich-Wilhelms-Universität Bonn},
year = 2014,
month = mar,

note = {In this thesis, I introduce and compare an implementation of two different shell models for physical systems consisting of multiple identical bosons.
In the main part, the shell model is used to study the energy spectra of bosons with contact interactions in a harmonic confinement as well as those of unconfined He clusters. The convergence of the shell-model results is investigated in detail as the size of the model space is increased. Furthermore, possible improvements such as the smearing of contact interactions or a unitary transformation of the potentials are utilised and assessed. Systems with up to twelve bosons are considered.
Moreover, I test a procedure to determine scattering observables from the energy spectra of fermions in a harmonic confinement. Finally, the position and width of resonances are extracted from the dependence of the energy spectra on the oscillator length.},

url = {http://hdl.handle.net/20.500.11811/6040}

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