Fakultät für Mathematik und Physik

 

Neueste Zugänge

  • 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 ...
  • 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 ...
  • 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 ...
  • 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. ...
  • 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 ...
  • 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 ...
  • 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, ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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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