• PT deformation of Calogero-Sutherland models 

  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 ...
• Supersymmetric AdS 7 and AdS 6 vacua and their consistent truncations with vector multiplets 

  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 ...
• MetroMMC: Electron-Capture Spectrometry with Cryogenic Calorimeters for Science and Technology 

  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 ...
• Implementation of the sectional aerosol module SALSA2.0 into the PALM model system 6.0: Model development and first evaluation 

  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. ...
• Improved Source/Absorber Preparation for Radionuclide Spectrometry Based on Low-Temperature Calorimetric Detectors 

  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 ...
• Ramsey interferometry with generalized one-axis twisting echoes 

  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 ...
• Multi-frequency radiation of dissipative solitons in optical fiber cavities 

  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 ...
• Towards a Better Representation of Fog Microphysics in Large-Eddy Simulations Based on an Embedded Lagrangian Cloud Model 

  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 ...
• Training deep quantum neural networks 

  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 ...
• A synchronized VUV light source based on high-order harmonic generation at FLASH 

  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 ...
• Cloud detection based on high resolution stereo pairs of the geostationary meteosat images 

  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 ...
• Carrier-envelope offset frequency stabilization of a thin-disk laser oscillator via depletion modulation 

  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. ...
• Frieze Patterns with Coefficients 

  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 ...
• Integral points of bounded height via universal torsors 

  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 ...
• Optimality conditions for abs-normal NLPs 

  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 ...
• Cubic fourfolds with ADE singularities and K3 surfaces 

  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 ...
• On a three-dimensional model for MEMS with hinged boundary conditions 

  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. ...
• Q`-cohomology projective planes and Enriques surfaces in characteristic two 

  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 ...
• Search for Eccentric Binary Black Hole Mergers with Advanced LIGO and Advanced Virgo during Their First and Second Observing Runs 

  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 ...
• High-efficiency squeezed light generation for gravitational wave detectors 

  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 ...

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