Fakultäten der Universität Bonn: Suche
Anzeige der Dokumente 711-720 von 747
Atoms in the lowest Landau level of a synthetic erbium quantum Hall system
(2022-11-30)
This thesis presents results on an experimental realisation of a synthetic Landau like system using ultracold erbium atoms in a two-dimensional quantum Hall ribbon geometry. The scheme used to realise artificial magnetic ...
Measurement of Lepton Mass Squared Moments of B→Xclνl Decays with the Belle II Experiment and Determination of the CKM Matrix Element |Vcb|
(2023-03-07)
This thesis presents measurements of the first to fourth moments of the lepton mass squared q2=(pl + pν)2 distribution of B→Xclν decays for l=e,μ and with Xc ...
Measuring Excitations of a Strongly Interacting Superfluid Fermi Gas
(2022-11-24)
This thesis investigates experimentally the superfluid phase of strongly interacting ultracold Fermi gases. The diluteness of the considered gases of neutral atoms ensures that their interaction can be described by a single ...
Gain Calibration of the Upgraded ALICE TPC
(2022-11-24)
For the upcoming Run 3 of the LHC at CERN, the interaction rate of lead-lead collisions will be increased to 50kHz . Especially for the main detector of the ALICE experiment, the TPC, this is a major challenge, as its ...
Fluctuation-Dissipation Relation for a Bose-Einstein Condensate of Photons
(2023-01-20)
For equilibrium systems, the magnitude of thermal fluctuations is closely linked to the dissipative response to external perturbations. This fluctuation-dissipation relation has been described for material particles in a ...
Spectroscopic Gas Sensor Based on a Fiber Fabry-Perot Cavity
(2022-10-17)
Optical spectroscopic sensors are powerful tools for analyzing gas mixtures in industrial and scientific applications. Whilst highly sensitive spectrometers tend to have a large footprint, miniaturized optical devices ...
C and CP Violation in Light-Meson Decays
(2023-11-29)
This dissertation delves into the systematic parameterization of a simultaneous violation of C and CP in the light-meson sector, i.e., a source of CP violation that has been mostly disregarded over the past six decades. ...
On the Numerical Computation of Modular Forms
(2023-12-12)
This thesis presents a fast method for the numerical computation of modular forms. Our method significantly improves the performance of previous methods by using mixed-precision iterative solving techniques to reduce the ...
Adding New Functionalities to Optical Fiber Cavities by Direct Laser Writing
(2023-12-12)
Fiber Fabry–Pérot cavities (FFPCs) are fiber-based optical cavities, which find widespread applications, for example, in cavity quantum electrodynamics, spectroscopy, sensing, metrology, and in many more fields. They provide ...
Development of a Laboratory Readout System for DEPFET Pixel Detector Modules and Investigation of Radiation Backgrounds at the SuperKEKB Accelerator
(2023-01-23)
With the upgrade from the e^+ e^- -collider KEKB to SuperKEKB, a 40-fold increase in instantaneous luminosity is targeted posing new challenges for the Belle II detector. Particularly the innermost detector layers, consisting ...