Faculties of University Bonn: Search
Now showing items 51-60 of 204
Phenomenological Aspects of Mirage Mediation
(2009-03-03)
We consider the possibility that string theory vacua with spontaneously broken supersymmetry and a small positive cosmological constant arise due to hidden sector matter interactions, known as F-uplifting/F-downlifting. ...
High-Spin γ-Ray Spectroscopy of 124Ba, 124Xe and 125Xe
(2009-08-27)
Rotational spectra had been observed for the first time in excited atomic nuclei in 1938. This observation was attributed to the deviation from spherical shape. In quantum mechanics, when a perfectly spherical system ...
Reformulation of the Hermitean 1-Matrix Model as an Effective Field Theory
(2009-07-22)
The formal Hermitean 1-matrix model is shown to be equivalent to an effective field theory. The correlation functions and the free energy of the matrix model correspond directly to the correlation functions and the free ...
Measurement of neutral current deep inelastic e+ p scattering cross sections with longitudinally polarized positrons with ZEUS at HERA
(2009-09-02)
Measurements of neutral current deep inelastic scattering of protons colliding with longitudinally polarized positrons, performed with data recorded in years 2006 and 2007 with the ZEUS detector, corresponding to an ...
Oberflächencharakterisierung von III-V MOCVD-Filmen aus heterozyklischen Single Source Precursoren
(2009-09-03)
Oberflächencharakterisierung von III-V MOCVD-Filmen aus heterozyklischen Single Source Precursoren In vielen mikro- und optoelektronischen Bauteilen finden Antimon-haltige Verbindungshalbleiter Verwendung. Insbesondere ist ...
Wasserstoffeinlagerung an Ermüudungsrissen der Aluminiumlegierung 6013 unter korrosiver Umgebung
(2009-08-25)
Das Ziel der vorliegenden Arbeit besteht im ortsaufgelösten Nachweis einer erhöhten Wasserstoffkonzentration im plastisch deformierten Bereich von Ermüdungsrissen einer unter korrosiver Umgebung zyklisch verformten ...
A controlled one and two atom-cavity system
(2009-10-08)
In this thesis I present an experimental realization of controlled systems consisting of trapped neutral atoms strongly coupled to a high-finesse optical resonator. These systems enable the exploration of atom-light ...
Efficient sub-Doppler Transverse Laser Cooling of an Indium Atomic Beam
(2009-09-10)
Laser cooled atomic gases and atomic beams are widely studied samples in experimental research in atomic and optical physics. For the application of ultra cold gases as model systems for e.g. quantum many particle systems, ...
Search for the Associated Production of Charginos and Neutralinos in Proton-Antiproton Collisions at √s = 1.96 TeV with the DØ Detector at the Tevatron
(2009-06-08)
A search for Supersymmetry is performed via the associated production of charginos and neutralinos in final states consisting of three charged leptons and missing transverse energy using data collected with the \Dzero\ ...
Three-Body Halo Nuclei in an Effective Theory Framework
(2009-07-02)
The universal properties and structure of halo nuclei composed of two neutrons (2n) and a core are investigated within an effective quantum mechanics framework. We construct an effective interaction potential that ...