• Scaling the Decay of Turbulence Kinetic Energy in the Free-Convective Boundary Layer 

  El Guernaoui, O.; Reuder, J.; Esau, I.; Wolf, T.; Maronga, B. (Dordrecht : Springer Netherland, 2019)

  We investigate the scaling for decaying turbulence kinetic energy (TKE) in the free-convective boundary layer, from the time the surface heat flux starts decaying, until a few hours after it has vanished. We conduct a set ...
• Improved surface passivation and reduced parasitic absorption in PEDOT:PSS/c-Si heterojunction solar cells through the admixture of sorbitol 

  Halbich, M.-U.; Zielke, D.; Gogolin, R.; Sauer-Stieglitz, R.; Lövenich, W.; Schmidt, J. (London : Nature Publishing Group, 2019)

  We examine the impact of sorbitol admixture to the hole-conduction polymer PEDOT:PSS [poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)] on the characteristics of PEDOT:PSS/crystalline silicon heterojunction solar ...
• Central Tethyan platform-top hypoxia during Oceanic Anoxic Event 1a 

  Hueter, A.; Huck, S.; Bodin, S.; Heimhofer, U.; Weyer, S.; Jochum, K.P.; Immenhauser, A. (Göttingen : Copernicus GmbH, 2019)

  Short-term hypoxia in epeiric water masses is a common phenomenon of modern marine environments and causes mass mortality in coastal marine ecosystems. Here, we test the hypothesis that during the early Aptian, platform-top ...
• Topic Study Group No. 2: Mathematics Education at Tertiary Level 

  Giraldo, Victor; Rasmussen, Chris; Biza, Irene; Khakbaz, Azimehsadat; Hochmuth, Reinhard (New York, NY : Springer International Publishing, 2017)

  [No abstract available]
• Search for multimessenger sources of gravitational waves and high-energy neutrinos with advanced LIGO during its first observing run, ANTARES, and IceCube 

  Albert, A.; André, M.; Anghinolfi, M.; Ardid, M.; Aubert, J.-J.; IceCube Collaboration; Adya, V. B.; Affeldt, C.; Aufmuth, P.; Bergmann, G.; Biscoveanu, S.; Bisht, A.; Bode, N.; Booker, P.; Brinkmann, M.; Cabero, M.; Danilishin, Stefan L.; Dent, T.; Varona, O. de; Doravari, S.; Hanke, J.; Koehlenbeck, S.M.; Koper, N.; Kringel, V.; Kuehn, G.; Leavey, S.; Lehmann, J.; Lough, J.D.; Lück, H.; Mehmet, M.; Mukherjee, Arunava; Nery, M.; Ohme, F.; Oppermann, P.; Phelps, M.; Puncken, O.; Rüdiger, A.; Schreiber, E.; Schulte, B.W.; Setyawati, Y.; Standke, M.; Steinke, M.; Steinmeyer, D.; Thies, F.; Vahlbruch, H.; 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.; LIGO Scientific Collaboration; VIRGO Collaboration; Hennig, M.; Heurs, J.; Junker, K.S.; Karvinen, S.; Kaufer, S.; Khan, R.; Kirchhoff, P.; Koch, M. M. (Bristol : IOP Publishing Ltd., 2019)

  Astrophysical sources of gravitational waves, such as binary neutron star and black hole mergers or core-collapse supernovae, can drive relativistic outflows, giving rise to non-thermal high-energy emission. High-energy ...
• Research on Teaching and Learning Mathematics at the Tertiary Level: State-of-the-Art and Looking Ahead 

  Biza, Irene; Giraldo, Victor; Hochmuth, Reinhard; Sadat Khakbaz, Azimeh; Rasmussen, Chris (New York, NY : Springer International Publishing, 2016)

  This topical survey focuses on research in tertiary mathematics education, a field that has experienced considerable growth over the last 10 years. Drawing on the most recent journal publication as well as the latest ...
• On the free-precession candidate PSR B1828-11: Evidence for increasing deformation 

  Ashton, G.; Jones, D.I.; Prix, Reinhard (Oxford : Oxford University Press (OUP), 2017)

  We observe that the periodic variations in spin-down rate and beam-width of the radio pulsar PSR B1828-11 are getting faster. In the context of a free precession model, this corresponds to a decrease in the precession ...
• Every finite system of T1 uniformities comes from a single distance structure 

  Heitzig, Jobst (Valencia : Universitat Politecnica de Valencia, 2002)

  Using the general notion of distance function introduced in an earlier paper, a construction of the finest distance structure which induces a given quasi-uniformity is given. Moreover, when the usual defining condition xy ...
• Exact BPS bound for noncommutative baby Skyrmions 

  Domrin, Andrei V.; Lechtenfeld, Olaf; Linares, Román; Maceda, Marco (Amsterdam : Elsevier B.V., 2013)

  The noncommutative baby Skyrme model is a Moyal deformation of the two-dimensional sigma model plus a Skyrme term, with a group-valued or Grassmannian target. Exact abelian solitonic solutions have been identified analytically ...
• Double-slit photoelectron interference in strong-field ionization of the neon dimer 

  Kunitski, Maksim; Eicke, Nicolas; Huber, Pia; Köhler, Jonas; Zeller, S.; Voigtsberger, J.; Schlott, Nikolai; Henrichs, Kevin; Sann, H.; Trinter, F.; Schmidt, L.; Kalinin, Anton; Schöffler, M.; Jahnke, T.; Lein, Manfred; Dörner, R. (London : Nature Publishing Group, 2019)

  Wave-particle duality is an inherent peculiarity of the quantum world. The double-slit experiment has been frequently used for understanding different aspects of this fundamental concept. The occurrence of interference ...
• Design and construction of an optical test bed for LISA imaging systems and tilt-to-length coupling 

  Chwalla, M.; Danzmann, Karsten; Fernández Barranco, G.; Fitzsimons, E.; Gerberding, Oliver; Heinzel, Gerhard; Killow, Christian J.; Lieser, M.; Perreur-Lloyd, M.; Robertson, D.I.; Schuster, Sönke; Schwarze, Thomas S.; Tröbs, M.; Ward, H.; Zwetz, M. (Bristol : IOP Publishing, 2016)

  The laser interferometer space antenna (LISA) is a future space-based interferometric gravitational-wave detector consisting of three spacecraft in a triangular configuration. The interferometric measurements of path length ...
• Numerical Methods for Variational Phase-Field Fracture Problems 

  Mang, Katrin; Wick, Thomas (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019-07-19)

  In these lectures notes, the variational phase-field approach for modeling fracture propagation is edited for the usage in classes and summer schools. Basic modeling is briefly reviewed first. The main emphasis is on the ...
• Two-qubit microwave quantum logic gate with 9Be+ ions in scalable surface-electrode ion traps 

  Hahn, Henning (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

  Towards the goal of a large-scale quantum computer based on trapped ions, near-field microwaves represent a promising approach to perform the techni- cally challenging key operation of a two-qubit entangling gate. In this ...
• Thompson field theory 

  Stiegemann, Deniz Ekrem (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

  We introduce Thompson field theory, a class of toy models of conformal field theory in which Thompson's group T takes the role of a discrete analogue of the chiral conformal group. T and the related group F are discrete ...
• Twisting the N=2 string 

  Ketov, Sergei V.; Lechtenfeld, Olaf; Parkes, Andrew J. (College Park (Maryland) : American Physical Society, 1995)

  The most general homogeneous monodromy conditions in N=2 string theory are classified in terms of the conjugacy classes of the global symmetry group U(1,1)⊗openZ2. For classes which generate a discrete subgroup Γ, the ...
• On the N=2 supersymmetric Camassa-Holm and Hunter-Saxton equations 

  Lenells, Jonatan; Lechtenfeld, Olaf (College Park (Maryland) : American Institute of Physics, 2009)

  We consider N=2 supersymmetric extensions of the Camassa–Holm and Hunter-Saxton equations. We show that they admit geometric interpretations as Euler equations on the superconformal algebra of contact vector fields on the ...
• Superfield formulation of nonlinear N=4 supermultiplets 

  Bellucci, Stefano; Krivonos, Sergey; Lechtenfeld, Olaf; Shcherbakov, Andrey (College Park (Maryland) : American Physical Society, 2008)

  We propose a unified superfield formulation of N=4 off-shell supermultiplets in one spacetime dimension using the standard N=4 superspace. The main idea of our approach is a gluing together of two linear supermultiplets ...
• Target duality in N=8 superconformal mechanics and the coupling of dual pairs 

  Gonzales, Marcelo; Khodaee, Sadi; Lechtenfeld, Olaf; Toppan, Francesco (College Park (Maryland) : American Institute of Physics, 2013)

  We couple dual pairs of N=8 superconformal mechanics with conical targets of dimension d and 8−d. The superconformal coupling generates an oscillator-type potential on each of the two target factors, with a frequency ...
• Supersymmetric Calogero models by gauging 

  Fedoruk, Sergey; Ivanov, Evgeny; Lechtenfeld, Olaf (College Park (Maryland) : American Physical Society, 2009)

  New superconformal extensions of d=1 Calogero-type systems are obtained by gauging the U(n) isometry of matrix superfield models. We consider the cases of N=1, N=2, and N=4 as one-dimensional supersymmetries. The bosonic ...
• Harmonic N=2 mechanics 

  Galajinsky, Anton; Lechtenfeld, Olaf (College Park (Maryland) : American Physical Society, 2009)

  N=2 superconformal many-body quantum mechanics in arbitrary dimensions is governed by a single scalar prepotential which determines the bosonic potential and the boson-fermion couplings. We present a special class of such ...

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