Fakultät für Mathematik und Physik


 

Recent Submissions

  • Bergmann, K.; Nägerl, H.-C.; Panda, C.; Gabrielse, G.; Miloglyadov, E.; Quack, M.; Seyfang, G.; Wichmann, G.; Ospelkaus, Silke; Kuhn, Axel; Longhi, S.; Szameit, A.; Pirro, P.; Hillebrands, B.; Zhu, X.-F.; Zhu, J.; Drewsen, M.; Hensinger, W.K.; Weidt, S.; Halfmann, T.; Wang, H.-L.; Paraoanu, G.S.; Vitanov, N.V.; Mompart, J.; Busch, T.; Barnum, T.J.; Grimes, D.D.; Field, R.W.; Raizen, M.G.; Narevicius, E.; Auzinsh, M.; Budker, D.; Pálffy, A.; Keitel, C.H. (Bristol : Institute of Physics Publishing, 2019)
    STIRAP (stimulated Raman adiabatic passage) is a powerful laser-based method, usually involving two photons, for efficient and selective transfer of populations between quantum states. A particularly interesting feature ...
  • Edler, Frederik; Miccoli, Ilio; Pfnür, Herbert; Tegenkamp, Christoph (Bristol : Institute of Physics Publishing, 2019)
    Electronic properties of low dimensional structures on surfaces can be comprehensively explored by surface transport experiments. However, the surface sensitivity of this technique to atomic structures comes along with the ...
  • Lechtenfeld, Olaf; Zhilin, G. (Bristol : Institute of Physics Publishing, 2019)
    We set up a correspondence between solutions of the Yang-Mills equations on × S 3 and in Minkowski spacetime via de Sitter space. Some known Abelian and non-Abelian exact solutions are rederived. For the Maxwell case we ...
  • Krivonos, S.; Lechtenfeld, O.; Sutulin, A. (Bristol : Institute of Physics Publishing, 2019)
    We review the construction of supersymmetric extension of the n-particle Euler-Calogero-Moser model within the Hamiltonian approach [1]. The main feature of the proposed supersymmetrization method is that it is automatically ...
  • Danilishin, S.L.; Khalili, F.Y.; Miao, H. (Heidelberg : Springer Verlag, 2019)
    Quantum fluctuation of light limits the sensitivity of advanced laser interferometric gravitational-wave detectors. It is one of the principal obstacles on the way towards the next-generation gravitational-wave observatories. ...
  • Correa, F.; Lechtenfeld, O. (Heidelberg : Springer Verlag, 2019)
    Calogero-Sutherland models of N identical particles on a circle are deformed away from hermiticity but retaining a PT symmetry. The interaction potential gets completely regularized, which adds to the energy spectrum an ...
  • Malek, E.; Samtleben, H.; Camell, V.V. (Heidelberg : Springer Verlag, 2019)
    Using exceptional field theory we construct supersymmetric warped AdS 7 vacua of massive IIA and AdS 6 vacua of IIB, as well as their consistent truncations including vector multiplets. We show that there are no consistent ...
  • Ranitzsch, P.C.-O.; Arnold, D.; Beyer, J.; Bockhorn, L.; Bonaparte, J.J.; Enss, C.; Kossert, K.; Kempf, S.; Loidl, M.; Mariam, R.; Nähle, O.J.; Paulsen, M.; Rodrigues, M.; Wegner, M. (Heidelberg : Springer Verlag, 2019)
    Accurate decay data of radionuclides are necessary for many fields of science and technology, ranging from medicine and particle physics to metrology. However, data that are in use today are mostly based on measurements ...
  • Kurppa, M.; Hellsten, A.; Roldin, P.; Kokkola, H.; Tonttila, J.; Auvinen, M.; Kent, C.; Kumar, P.; Maronga, Björn; Järvi, L. (Göttingen : Copernicus GmbH, 2019)
    Urban pedestrian-level air quality is a result of an interplay between turbulent dispersion conditions, background concentrations, and heterogeneous local emissions of air pollutants and their transformation processes. ...
  • Bockhorn, L.; Paulsen, M.; Beyer, J.; Kossert, K.; Loidl, M.; Nähle, O.J.; Ranitzsch, P.C.-O.; Rodrigues, M. (Heidelberg : Springer Verlag, 2020)
    High-resolution beta spectrometry based on low-temperature calorimetric detectors requires high-quality source/absorber combinations in order to avoid spectrum artifacts and to achieve optimal detection efficiency. In this ...
  • Schulte, Marius; Martínez-Lahuerta, Victor J. (Wien : Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften, 2020)
    We consider a large class of Ramsey interferometry protocols which are enhanced by squeezing and un-squeezing operations before and after a phase signal is imprinted on the collective spin of N particles. We report an ...
  • Melchert, Oliver; Demircan, Ayhan; Yulin, Alexey (Washington, DC : American Association for the Advancement of Science, 2020)
    New resonant emission of dispersive waves by oscillating solitary structures in optical fiber cavities is considered analytically and numerically. The pulse propagation is described in the framework of the Lugiato-Lefever ...
  • Schwenkel, Johannes; Maronga, Björn (Basel : MDPI, 2020)
    The development of radiation fog is influenced by multiple physical processes such as radiative cooling and heating, turbulent mixing, and microphysics, which interact on different spatial and temporal scales with one ...
  • Beer, Kerstin; Bondarenko, Dmytro; Farrelly, Terry; Osborne, Tobias J.; Salzmann, Robert; Scheiermann, Daniel; Wolf, Ramona (Berlin : Nature Research, 2020)
    Neural networks enjoy widespread success in both research and industry and, with the advent of quantum technology, it is a crucial challenge to design quantum neural networks for fully quantum learning tasks. Here we propose ...
  • Appi, Elisa; Papadopoulou, Christina C.; Mapa, Jose Louise; Wesavkar, Nishad; Jusko, Christoph; Mosel, Philip; Ališauskas, Skirmantas; Lang, Tino; Heyl, Christoph M.; Manschwetus, Bastian; Brachmanski, Maciej; Braune, Markus; Lindenblatt, Hannes; Trost, Florian; Meister, Severin; Schoch, Patrizia; Treusch, Rolf; Moshammer, Robert; Hartl, Ingmar; Morgner, Uwe; Kovacev, Milutin (Berlin : Nature Research, 2020)
    Ultrafast measurements in the extreme ultraviolet (XUV) spectral region targeting femtosecond timescales rely until today on two complementary XUV laser sources: free electron lasers (FELs) and high-harmonic generation ...
  • Dehnavi, Sahar; Maghsoudi, Yasser; Zakšek, Klemen; Zoej, Mohammad Javad Valadan; Seckmeyer, Gunther; Skripachev, Vladimir (Basel : MDPI AG, 2020)
    Due to the considerable impact of clouds on the energy balance in the atmosphere and on the earth surface, they are of great importance for various applications in meteorology or remote sensing. An important aspect of the ...
  • Andrade, José R.C.; Modsching, Norbert; Tajalli, Ayhan; Dietrich, Christian M.; Kleinert, Sven; Placzek, Fabian; Kreipe, Bernhard; Schilt, Stephane; Wittwer, Valentin J.; Südmeyer, Thomas; Morgner, Uwe (Piscataway : Institute of Electrical and Electronics Engineers, 2020)
    We present a novel concept for the stabilization of the carrier-envelope offset (CEO) frequency of femtosecond pulse trains from thin-disk laser oscillators by exploiting gain depletion modulation in the active gain region. ...
  • Cuntz, Michael; Holm, Thorsten; JØrgensen, Peter (Cambridge : Cambridge University Press, 2020)
    Frieze patterns, as introduced by Coxeter in the 1970s, are closely related to cluster algebras without coefficients. A suitable generalization of frieze patterns, linked to cluster algebras with coefficients, has only ...
  • Wilsch, Florian (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    A conjecture of Manin’s relates the number of rational points of bounded height on Fano varieties with their geometric properties. Analogously to this conjecture on rational points, we study the distribution of integral ...
  • Hegerhorst-Schultchen, Lisa Christine (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    Structured nonsmoothness is widely present in practical optimization problems. A particularly attractive class of nonsmooth problems, both from a theoretical and from an algorithmic perspective, are nonsmooth NLPs with ...

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