E-Dissertationen: Suche
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Magnetic Quantum Walks of Neutral Atoms in Optical Lattices
(2018-09-17)
This thesis focuses on the simulation of the physics of a charged particle under an external magnetic field by using discrete-time quantum walks of a spin-1/2 particle in a two-dimensional lattice. By Floquet-engineering ...
Effective actions from string and M-theory: compactifications on G2-manifolds and dark matter in the KL moduli stabilization scenario
(2018-09-26)
In this thesis we study the emergence of four-dimensional effective actions from compactifications of higher-dimensional string/M-theory and explore some of their phenomenological implications.
In order to compactify ......
In order to compactify ......
Generation of dark matter in the early universe from BSM models
(2018-10-11)
For several decades the nature of Dark Matter (DM) has been elusive to physics. Explanations for its evidences have been stacked up and most of them require new particle physics. In this work, we explore the standard thermal ...
Production of Dark Matter in Cosmological Models with Low Reheating Temperature
(2018-10-23)
In standard cosmology it is assumed that dark matter (DM) is thermally produced during the radiation dominated era after an inflationary period. This has led to the prediction of weakly interactive massive particles (WIMPs) ...
An Investigation of Constraints on Dark Matter Models from Mono-jet Searches at LHC
(2018-10-31)
In this work we investigate the Weakly Interacting Massive Particle (WIMP) dark matter searches in colliders. We focus on the mono-jet searches and derive the upper bounds on the WIMP production cross-sections at the LHC. ...
Bestimmung der Doppelpolarisationsobservablen E in der Reaktion γ⃗p⃗ → pη am CBELSA/TAPS-Experiment in Bonn
(2019-03-07)
Photoproduktionsdaten beeinflussen zunehmend unser Bild der tatsächlich in der Natur existierenden Baryon-Resonanzen. Die Analyse von (Polarisations-)Observablen ist entscheidend für die Extraktion von Resonanzen aus diesen ......
Search for the Higgs Boson Decay into Bottom and Charm Quarks Using Proton-Proton Collisions at √s = 13 TeV
(2019-02-05)
A search for the Standard Model (SM) Higgs boson, produced in association with a Z boson, in decays to bottom or charm quarks is presented. The SM Higgs boson mass is assumed to be 125 GeV. These searches analyse a data ...
A dark matter quest through decaying axinos and vector-like portals
(2019-01-24)
To date there is no definite particle physics interpretation of dark matter. At the same time, LHC searches at √s = 14 TeV yielded no signals of physics beyond the Standard Model. Minimal models of new physics that predict ...
Few-Body Systems in Lattice Effective Field Theory
(2019-02-04)
Nuclear lattice effective field theory is a novel approach in nuclear physics combining classical effective field theory with lattice methods and newly available computational resources. It is particularly successful for ......
Lorentzkraftbildgebung: MR-basierte Darstellung Neuronaler Aktivität in Echtzeit
(2019-02-12)
In dieser Arbeit wurde eine neue Methode zur Darstellung neuronaler Aktivität in Echtzeit vorgestellt. Dabei wird die Lorentzkraft, die auf die elektrischen Ladungsträger aktiver Nervenzellen im Magnetfeld eines MR-Tomographen ...