• Local convection and turbulence in the Amazonia using Large Eddy Simulation model 

  Neves, T.; Fisch, G.; Raasch, S. (Basel : MDPI AG, 2018)

  Using a high resolution model of Large Eddies Simulation (LES), named PALM from PArallel LES Model, a set of simulations were performed to understand how turbulence and convection behave in a pasture and forest sites in ...
• Global spectral irradiance array spectroradiometer validation according to WMO 

  Zuber, R.; Ribnitzky, M.; Tobar, M.; Lange, K.; Kutscher, D.; Schrempf, M.; Niedzwiedz, A.; Seckmeyer, G. (Bristol : Institute of Physics Publishing, 2018)

  Solar spectral irradiance measured by two recently developed array spectroradiometers (called UV-BTS and VIS-BTS) are compared to the results of a scanning double monochromator system which is certified as a travelling ...
• Laser frequency stabilization for the sub-SQL interferometer 

  Hanke, Manuela Melanie (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)

  A century after the existence of gravitational waves was predicted by Albert Einstein in his general theory of relativity, the first direct detection was made on September 14 in 2015. Continuous upgrades and improvements ...
• LISA and its precursor LISA Pathfinder 

  García Marín, A.F.; Heinzel, G; Danzmann, K. (Trieste : Sissa Medialab, 2007)

  The Laser Interferometer Space Antenna (LISA) is a joint ESA-NASA mission designed to observe gravitational waves in the frequency range between 10-4 to 1 Hz, where ground-based detectors are limited by terrestrial noise. ...
• Coarse-grained distinguishability of field interactions 

  Bény, Cédric (Wien : Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften, 2018)

  Information-theoretical quantities such as statistical distinguishability typically result from optimisations over all conceivable observables. Physical theories, however, are not generally considered valid for all ...
• On relativistic generalization of Perelman’s W-entropy and thermodynamic description of gravitational fields and cosmology 

  Ruchin, Vyacheslav; Vacaru, Olivia; Vacaru, Sergiu I. (Cham : Springer, 2017)

  Using double 2+2 and 3+1 nonholonomic fibrations on Lorentz manifolds, we extend the concept of W-entropy for gravitational fields in general relativity (GR). Such F- and W-functionals were introduced in the Ricci flow ...
• All AdS7 solutions of type II supergravity 

  Apruzzi, Fabio; Fazzi, Marco; Rosa, Dario; Tomasiello, Alessandro (Cham : Springer, 2014)

  In M-theory, the only AdS7 supersymmetric solutions are AdS7 × S 4 and its orbifolds. In this paper, we find and classify new supersymmetric solutions of the type AdS7 × M 3 in type II supergravity. While in IIB none exist, ...
• Existence and qualitative aspects of geophysical water waves 

  Matioc, Anca-Voichita (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)

  The object of geophysical fluid dynamics is the study of naturally occurring flows on the Earth. Most of the problems that arise are at the large-scale end, where either the rotation of the Earth or density differences ...
• Hyperkähler manifolds of curves and l-hypercomplex structures 

  Lora Lamia Donin, Niccolò (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)

  In this work we focus our attention on the description of hyperkähler manifolds that arise as moduli spaces of curves inside twistor spaces that admit a fibration on the tangent bundle to the Riemann sphere. We characterize ...
• Funktionale Schichten für den Ultrakurzpuls Bereich 

  Willemsen, Thomas (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)

  Hochtechnologische Laseranwendungen für den Ultrakurzpuls Bereich erfordern dielektrische Komponenten mit bestmöglichen Eigenschaften hinsichtlich des optischen Übertragungsverhaltens der Phaseneigenschaften und der ...
• Thermal and magnetoelastic effects in magnetic tunnel junctions 

  Yang, Hangfu (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)

  Heat dissipation in spintronic devices is currently a limiting factor for their further miniaturization, spurring scientists on seeking for more energy friendly mechanisms to manipulate spin. In this work, two new approaches ...
• Collective effects and superradiance in atomic ensembles 

  Roth, Alexander (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)

  This thesis contributes to the field of collective effects in atomic ensembles. We explore synchronization of superradiant lasers in different coupling configurations and study superradiance in off-resonantly probed ...
• State preparation and verification in continuously measured quantum systems 

  Lammers, Jonas (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)

  Zeitkontinuierliche Messungen sind ein etablierter Teil und Grundlage vieler quantenoptischer Experimente. Diese Arbeit untersucht mögliche Ansätze zur Verwendung von Homodyn-Detektion von Licht für die effiziente Erzeugung ...
• Polymer based whispering gallery mode humidity sensor 

  Petermann, A.B.; Hildebrandt, T.; Morgner, Uwe; Roth, B.W.; Meinhardt-Wollweber, Merve (Basel : MDPI AG, 2018)

  Whispering gallery mode (WGM) resonators are versatile high sensitivity sensors, but applications regularly suffer from elaborate and expensive manufacturing and read-out. We have realized a simple and inexpensive concept ...
• Accurate propagation of ultrashort pulses in nonlinear waveguides using propagation models for the analytic signal 

  Melchert, O.; Morgner, Uwe; Roth, B.; Babushkin, I.; Demircan, A. (Bellingham, WA : SPIE - International Society for Optical Engineering, 2018)

  We present a numerical approach for the accurate simulation of the complex propagation dynamics of ultrashort optical pulses in nonlinear waveguides, especially valid for few-cycle pulses. The propagation models are derived ...
• Creating the first Bose-Einstein condensate in space 

  Lachmann, M.D.; Ahlers, H.; Becker, D.; Seidel, S.T.; Wendrich, T.; Rasel, Ernst Maria; Ertmer, Wolfgang; MAIUS-Team (Bellingham, WA : SPIE - International Society for Optical Engineering, 2018)

  On 23rd of January 2017 the first Bose-Einstein Condensate (BEC) in Space was created on-board the sounding rocket mission MAIUS-1. The successful launch marks a major advancement in the effort of performing matter wave ...
• FPGA based laser frequency stabilization using FM spectroscopy 

  Spindeldreier, Christian; Bartosch, Wolfgang; Wendrich, Thijs; Rasel, Ernst Maria; Ertmer, Wolfgang; Blume, Holger (Bellingham, WA : SPIE - International Society for Optical Engineering, 2018)

  Frequency stabilized light sources with narrow linewidth are mandatory for atom interferometry based experiments. For compact experiment designs used on space platforms, tunable DFB diode lasers are often used. These lasers ...
• Black hole binary systems : from dynamics to accretion 

  Maureira Fredes, Cristián Danilo (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)

  The problem of the evolution of a large number of particles due to gravity is crucial to many astrophysical phenomena. An important problem is the dynamical evolution ...
• Skyrme model from 6d N=(2,0) theory 

  Ivanova, Tatiana A.; Lechtenfeld, Olaf; Popov, Alexander D. (Amsterdam : Elsevier B.V., 2018)

  We consider 5d Yang–Mills theory with a compact ADE-type gauge group G on R3,1×I, where I is an interval. The maximally supersymmetric extension of this model appears after compactification on S1 of 6d N=(2,0) superconformal ...
• N-extended supersymmetric Calogero models 

  Krivonos, Sergey; Lechtenfeld, Olaf; Sutulin, Anton (Amsterdam : Elsevier B.V., 2018)

  We propose a new N-extended supersymmetric su(n) spin-Calogero model. Employing a generalized Hamiltonian reduction adopted to the supersymmetric case, we explicitly construct a novel rational n-particle Calogero model ...

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