E-Dissertationen: Search
Now showing items 611-620 of 757
Optical plane selection in a dipole trap
(2021-12-17)
Quantum technology has advanced considerably within the last decades [1, 2]. Quantum simulators are among the primary goals of this ongoing „quantum revolution“ [3]. They promise insight into many-particle phenomena that ...
Phenomenology of U(1)Lμ-Lτ Gauge Extension of the Standard Model at LHC
(2021-04-26)
Extending the Standard Model (SM) by a U(1)_{L_mu-L_tau} group gives potentially significant new contributions to g_mu-2, allows the construction of realistic neutrino mass matrices, incorporates violation of lepton ...
Halo bias renormalisation
(2020-06-09)
Modern galaxy redshift surveys provide a wealth of information about the evolution of our Universe. They allow to measure both the two-dimensional position on the sky and the distance (given by the cosmological redshift) ...
Top-quark pair production in association with a Z boson in the final state with four charged leptons
(2019-10-29)
The production cross section of a top-quark pair in association with a Z boson is measured in the channel with four reconstructed leptons, using 36.1 fb-1 of proton–proton collisions, collected with the ATLAS ......
Radio Continuum of Galaxies with H2O-Megamaser-Disks
(2019-11-08)
Galaxies with H2O-megamaser-disks are low luminosity active galaxies where 22GHz H2O-maser emission is detected in their accretion disk surrounding the central supermassive black hole (SMBH). Furthermore, ...
Can the halo model describe 2nd- and 3rd-order correlation functions of gravitational lensing consistently?
(2019-11-07)
To understand and model the distribution of and the relation between baryonic and dark matter in the Universe is one of the key challenges in contemporary astrophysics. A well-established theoretical description is given ......
Parametric excitation of the quantum vacuum in nonlinear optical resonators
(2022-07-25)
In this thesis, I present the generation of correlated photon pairs in high-finesse nonlinear optical micro-resonators. In a first attempt, we utilize the third-order nonlinear material polarization of the dielectric mirror ...
Development and Deployment of DATCON, an FPGA-based Data Reduction System for the Belle II Pixel Detector
(2022-10-12)
The SuperKEKB collider located in Tsukuba, Japan, will have a luminosity 40 times higher than its predecessor. With an expected occupancy of 3 %, largely dominated by beam backgrounds, the new pixel DEPFET detector (PXD) ...
Quantum Information and Quantum Gravity in Anti-De Sitter and Cosmological Spacetimes
(2022-09-30)
The holographic principle constitutes a guiding principle for the construction of a quantum theory of gravity. While the final goal is the application of such a theory to our own universe, the most concrete instantiation ...
Analogue quantum simulating a bilayer Hubbard system or a monolayer Hubbard system with reservoir: thermodynamics, entropy and spin correlations
(2022-11-07)
The high controllability of analogue quantum simulators using ultracold atoms in optical lattices pushes forward the frontiers in the experimental investigation of the fermionic Hubbard model. The bilayer Hubbard model is ...