Fakultät für Mathematik und Physik

 

Recent Submissions

  • 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 ...
  • 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 ...
  • 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. ...
  • 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 ...
  • Stegmann, Ann-Kathrin (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    In this thesis, we will give a partial classification of cubic fourfolds by their isolated ADE singularities. We have a correspondence between cubic fourfolds and complete (2,3)- intersections in ℙ^4 having both certain ...
  • Nik, Katerina (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    We study a free boundary problem arising from the modeling of an idealized electrostatically actuated MEMS device. In contrast to existing literature, we consider a three-dimensional device involving a hinged elastic plate. ...
  • Schütt, Matthias (s.l. : Association de l'Épijournal de Geometrie Algebrique, 2019)
    We classify singular Enriques surfaces in characteristic two supporting a rank nine configuration of smooth rational curves. They come in one-dimensional families defined over the prime field, paralleling the situation in ...
  • Abbott, B.P.; Abbott, R.; Abbott, T.D.; Abraham, S.; Acernese, F.; Ackley, K.; Affeldt, C.; Aufmuth, P.; Bergmann, G.; Bisht, A.; Booker, P.; Brinkmann, M.; Cabero, M.; Danilishin, S.L.; Danzmann, K.; de Varona, O.; Hanke, M.M.; Hennig, J.; Heurs, M.; Hochheim, S.; Junker, J.; Kaufer, S.; Khan, S.; Kirchhoff, R.; Koehlenbeck, S.M.; Koper, N.; Krämer, C.; Kringel, V.; Kuehn, G.; Leavey, S.; Lehmann, J.; Lough, J.D.; Lück, H.; Mehmet, M.; Meylahn, F.; Mukherjee, A.; Mukund, N.; Nery, M.; Oppermann, P.; Phelps, M.; Rüdiger, A.; Schreiber, E.; Schulte, B.W.; Setyawati, Y.; Standke, M.; Steinke, M.; Steinmeyer, D.; Vahlbruch, H.; Wei, L.-W.; Weinert, M.; Wellmann, F.; Weßels, P.; Wilken, D.M.; Willke, B.; Winkler, W.; Wittel, H.; Woehler, J.; Wu, D.S.; et al. (Bristol : Institute of Physics Publishing, 2019)
    When formed through dynamical interactions, stellar-mass binary black holes (BBHs) may retain eccentric orbits (e > 0.1 at 10 Hz) detectable by ground-based gravitational-wave detectors. Eccentricity can therefore be ...
  • Mehmet, M.; Vahlbruch, H. (Bristol : Institute of Physics Publishing, 2019)
    The engineering of strongly squeezed vacuum states of light is a key technology for the reduction of quantum noise in gravitational wave detectors. We report on the observation of up to 12.0 dB squeezed vacuum states of ...
  • Abbott, B.P.; Abbott, R.; Abbott, T.D.; Abraham, S.; Acernese, F.; Ackley, K.; Adya, V.B.; Affeldt, C.; Aufmuth, P.; Bergmann, G.; Bisht, A.; Bode, N.; Booker, P.; Brinkmann, M.; Cabero, M.; Danilishin, S.L.; Danzmann, K.; Dent, T.; de Varona, O.; Doravari, S.; Hanke, M.M.; Heurs, M.; Hochheim, S.; Junker, J.; Kaufer, S.; Khan, S.; Kirchhoff, R.; Koch, P.; Koehlenbeck, S.M.; Koper, N.; Kringel, V.; Kuehn, G.; Leavey, S.; Lehmann, J.; Lough, J.D.; Lück, H.; Mehmet, M.; Mukherjee, A.; Nery, M.; Nitz, A.; Oppermann, P.; Phelps, M.; Puncken, O.; Rüdiger, A.; Schreiber, E.; Schulte, B.W.; Setyawati, Y.; Steinke, M.; Steinmeyer, D.; Thies, F.; Wei, L.-W.; Weinert, M.; Wellmann, F.; Weßels, P.; Wilken, D.M.; Willke, B.; Wimmer, M.H.; Winkler, W.; Wittel, H.; Woehler, J.; Wu, D.S.; et al. (Bristol : Institute of Physics Publishing, 2019)
    Advanced LIGO's second observing run (O2), conducted from 2016 November 30 to 2017 August 25, combined with Advanced Virgo's first observations in 2017 August, witnessed the birth of gravitational-wave multimessenger ...
  • Bosco, Hauke (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    Das vom Bundesministerium für Bildung und Forschung geförderte Forschungsprojekt Secondary Ionisation of Radioactive Isotopes for Ultra trace analysis with Spatial resolution (SIRIUS) zur Migration von Radionukliden aus ...
  • Zuber, Ralf (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    Especially for measurements in the UV spectral range the internal stray light is often a crucial contribution to the measurement uncertainty for array spectroradiometers. In this work a technical procedure for significant ...
  • Bielawski, Roger; Peternell, Carolin (Berlin : De Gruyter, 2019)
    We describe the natural geometry of Hilbert schemes of curves in and, in some cases, in , n ≥ 4.
  • Adya, V.B.; Affeldt, C.; Allen, B.; Aulbert, C.; Beer, C.; Bensch, M.; Bergmann, G.; Bisht, A.; Bock, O.; Bode, N.; Booker, P.; Brinkmann, M.; Cabero, M.; Capano, C.D.; Danilishin, S.L.; Danzmann, K.; Denker, T.; Dent, T.; Dergachev, V.; Varona, O.D.; Doravari, S.; Drago, M.; Dreissigacker, C.; Eggenstein, H.-B.; Fehrmann, H.; Hanke, M.M.; Heurs, M.; Hochheim, S.; Hofman, D.; Indik, N.; Junker, J.; Karvinen, K.S.; Kaufer, S.; Khan, S.; Kirchhoff, R.; Koch, P.; Koehlenbeck, S.M.; Kramer, C.; Kringel, V.; Krishnan, B.; Kuehn, G.; Leavey, S.; Lehmann, J.; Leonardi, M.; Lough, J.D.; Lück, H.; Lundgren, A.P.; Machenschalk, B.; Mehmet, M.; Mendoza-Gandara, D.; Milovich-Goff, M.C.; Ming, J.; Mukherjee, A.; Nery, M.; Nielsen, A.B.; Nitz, A.; Ohme, F.; Oppermann, P.; Papa, M.A.; Post, A.; Puncken, O.; Rüdiger, A.; Salemi, F.; Schreiber, E.; Schuette, D.; Schulte, B.W.; Schutz, B.F.; Setyawati, Y.; Singh, A.; Steinke, M.; Steinmeyer, D.; Steltner, B.; Theeg, T.; Thies, F.; Vahlbruch, H.; Walsh, S.; Wei, L.-W.; Weinert, M.; Wellmann, F.; Weßels, P.; Westerweck, J.; Wilken, D.; Willke, B.; Wimmer, M.H.; Winkler, W.; Wittel, H.; Woehler, J.; Wu, D.S.; Zhang, Y.-H.; Zhu, S.J.; et al. (The LIGO Scientific Collaboration and the Virgo Collaboration) (Bristol : Institute of Physics Publishing, 2019)
    We present a search for prompt gamma-ray counterparts to compact binary coalescence gravitational wave (GW) candidates from Advanced LIGO's first observing run (O1). As demonstrated by the multimessenger observations of ...
  • Bredemeier, Dennis (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    Solar cells fabricated on multicrystalline silicon show a pronounced degradation of their energy conversion efficiency under illumination at elevated temperature. This effect is frequently denoted LeTID (’Light and elevated ...
  • Laface, Roberto; Martinez, Cèsar (Catania : Dipartimento di Matematica e Informatica dell'Università di Catania, 2017)
    We prove an extension of the Babbage-Enriques-Petri theorem for semi-canonical curves. We apply this to show that the Prym variety of a generic element of a codimension $k$ subvariety of $\kr_g$ is not isogenous to another ...
  • Köhler, Fabian Matthias (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    Die Kernwaffentests und die Wiederaufarbeitung von Kernbrennstoff sind die do-minierenden Prozesse, durch welche es zu einer kontinuierlichen und dauerhaften Erhöhung der Iod-129 Konzentration in der Umwelt kam und noch ...

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