TY - CHAP
AU - Gerhardts, Lara
AU - Dehmel, Lukas
AU - Meister, Dorothee M.
ED - Wolf, Karsten D
ED - Rummler, Klaus
ED - Bettinger, Patrick
ED - Aßmann, Sandra
ID - 43143
T2 - Jahrbuch Medienpädagogik 16. Medienpädagogik in Zeiten einer tiefgreifenden Mediatisierung
TI - Die berufliche Tabletaneignung von Lehrkräften als Beispiel der Mediatisierung pädagogischer Handlungskontexte. Theoretische Perspektiven und empirische Befunde
ER -
TY - CHAP
AU - Dehmel, Lukas
ED - Bernhard-Skala,, Christian
ED - Bolten-Bühler, Ricarda
ED - Koller, Julia
ED - Rohs, Matthias
ED - Wahl, Johannes
ID - 43142
T2 - Erwachsenenpädagogische Digitalisierungsforschung. Impulse - Befunde - Perspektiven. Bielefeld
TI - Zur Entgrenzung der Arbeit des medienpädagogischen Weiterbildungspersonals im Kontext tiefgreifender Mediatisierung
ER -
TY - JOUR
AU - Hälterlein, Jens
ID - 43278
IS - 1
JF - Big Data & Society
TI - Epistemologies of predictive policing: Mathematical social science, social physics and machine learning
VL - 8
ER -
TY - JOUR
AB - Let E be an ordinary elliptic curve over a finite field and g be a positive integer. Under some technical assumptions, we give an algorithm to span the isomorphism classes of principally polarized abelian varieties in the isogeny class of E⁹ . The varieties are first described as hermitian lattices over (not necessarily maximal) quadratic orders and then geometrically in terms of their algebraic theta null point. We also show how to algebraically compute Siegel modular forms of even weight given as polynomials in the theta constants by a careful choice of an affine lift of the theta null point. We then use these results to give an algebraic computation of Serre’s obstruction for principally polarized abelian threefolds isogenous to E³ and of the Igusa modular form in dimension 4. We illustrate our algorithms with examples of curves with many rational points over finite fields.
AU - Kirschmer, Markus
AU - Narbonne, Fabien
AU - Ritzenthaler, Christophe
AU - Robert, Damien
ID - 34912
IS - 333
JF - Mathematics of Computation
KW - Applied Mathematics
KW - Computational Mathematics
KW - Algebra and Number Theory
SN - 0025-5718
TI - Spanning the isogeny class of a power of an elliptic curve
VL - 91
ER -
TY - GEN
AU - Schroeter-Wittke, Harald
ID - 41088
SN - 0540–6226
T2 - Jahrbuch für Evangelische Kirchengeschichte des Rheinlandes
TI - Anette Baumann / Alexander Jendorff / Frank Theisen (Hgg.), Religion – Migration – Integration. Studien zu Wechselwirkungen religiös motivierter Mobilität im vormodernen Europa, Tübingen 2019
VL - 70
ER -
TY - GEN
AU - Schroeter-Wittke, Harald
ID - 41090
SN - 0540–6226
T2 - Jahrbuch für Evangelische Kirchengeschichte des Rheinlandes
TI - Hendrik Meyer-Magister, Wehrdienst und Verweigerung als komplementäres Handeln. Individualisierungsprozesse im bundesdeutschen Protestantismus der 1950er Jahre (RBRD 7), Tübingen 2019
VL - 70
ER -
TY - GEN
AU - Schroeter-Wittke, Harald
ID - 41091
SN - 0540–6226
T2 - Jahrbuch für Evangelische Kirchengeschichte des Rheinlandes
TI - Jutta Stander-Dulisch, Glaubenskrisen, Neue Religionen und der Papst. Religion in „Stern“ und Spiegel“ von 1960 bis 2014, Bielefeld 2019
VL - 70
ER -
TY - JOUR
AB - The relativistic wave equations determine the dynamics of quantum fields in the context of quantum field theory. One of the conventional tools for dealing with the relativistic bound state problem is the Klein-Fock-Gordon equation. In this work, using a developed scheme, we present how to surmount the centrifugal part and solve the modified Klein-Fock-Gordon equation for the linear combination of Hulthén and Yukawa potentials. In particular, we show that the relativistic energy eigenvalues and corresponding radial wave functions are obtained from supersymmetric quantum mechanics by applying the shape invariance concept. Here, both scalar potential conditions, which are whether equal and nonequal to vector potential, are considered in the calculation. The energy levels and corresponding normalized eigenfunctions are represented as a recursion relation regarding the Jacobi polynomials for arbitrary
states. Beyond that, a closed form of the normalization constant of the wave functions is found. Furthermore, we state that the energy eigenvalues are quite sensitive with potential parameters for the quantum states. The nonrelativistic and relativistic results obtained within SUSY QM overlap entirely with the results obtained by ordinary quantum mechanics, and it displays that the mathematical implementation of SUSY quantum mechanics is quite perfect.
AU - Ahmadov, A. I.
AU - Aslanova, S. M.
AU - Orujova, M. Sh.
AU - Badalov, S. V.
ED - Vagnozzi, Sunny
ID - 44042
JF - Advances in High Energy Physics
KW - Nuclear and High Energy Physics
SN - 1687-7365
TI - Analytical Bound State Solutions of the Klein-Fock-Gordon Equation for the Sum of Hulthén and Yukawa Potential within SUSY Quantum Mechanics
VL - 2021
ER -
TY - CONF
AU - Meydani, Elnaz
AU - Düsing, Christoph
AU - Trier, Matthias
ID - 44073
T2 - Innovation Through Information Systems: Volume II: A Collection of Latest Research on Technology Issues
TI - Towards a Trust-Aware Item Recommendation System on a Graph Autoencoder with Attention Mechanism
ER -
TY - JOUR
AU - Neufeld, Sergej
AU - Bocchini, Adriana
AU - Schmidt, Wolf Gero
ID - 22310
JF - Physical Review Materials
SN - 2475-9953
TI - Potassium titanyl phosphate Z- and Y-cut surfaces from density-functional theory
ER -
TY - JOUR
AU - Plaickner, Julian
AU - Speiser, Eugen
AU - Braun, Christian
AU - Schmidt, Wolf Gero
AU - Esser, Norbert
AU - Sanna, Simone
ID - 22008
JF - Physical Review B
SN - 2469-9950
TI - Surface localized phonon modes at the Si(553)-Au nanowire system
ER -
TY - JOUR
AU - Meier, Lukas
AU - Schmidt, Wolf Gero
ID - 40244
IS - 1
JF - physica status solidi (b)
KW - Condensed Matter Physics
KW - Electronic
KW - Optical and Magnetic Materials
SN - 0370-1972
TI - GaInP/AlInP(001) Interfaces from Density Functional Theory
VL - 259
ER -
TY - JOUR
AU - Ruiz Alvarado, Isaac Azahel
AU - Karmo, Marsel
AU - Runge, Erich
AU - Schmidt, Wolf Gero
ID - 22009
JF - ACS Omega
SN - 2470-1343
TI - InP and AlInP(001)(2 × 4) Surface Oxidation from Density Functional Theory
ER -
TY - JOUR
AB - We perform a theoretical analysis of the structural and electronic properties of sodium potassium niobate K1-xNaxNbO3 in the orthorhombic room-temperature phase, based on density-functional theory in combination with the supercell approach. Our results for x=0 and x=0.5 are in very good agreement with experimental measurements and establish that the lattice parameters decrease linearly with increasing Na contents, disproving earlier theoretical studies based on the virtual-crystal approximation that claimed a highly nonlinear behavior with a significant structural distortion and volume reduction in K0.5Na0.5NbO3 compared to both end members of the solid solution. Furthermore, we find that the electronic band gap varies very little between x=0 and x=0.5, reflecting the small changes in the lattice parameters.
AU - Bidaraguppe Ramesh, Nithin
AU - Schmidt, Falko
AU - Schindlmayr, Arno
ID - 22960
IS - 8
JF - The European Physical Journal B
SN - 1434-6028
TI - Lattice parameters and electronic band gap of orthorhombic potassium sodium niobate K0.5Na0.5NbO3 from density-functional theory
VL - 94
ER -
TY - JOUR
AU - Friedrich, Christoph
AU - Blügel, Stefan
AU - Schindlmayr, Arno
ID - 22761
IS - 3
JF - Physical Review B
SN - 2469-9950
TI - Erratum: Efficient implementation of the GW approximation within the all-electron FLAPW method [Phys. Rev. B 81, 125102 (2010)]
VL - 104
ER -
TY - JOUR
AB - Uniaxial anisotropy in nonlinear birefringent crystals limits the efficiency of nonlinear optical interactions and breaks the spatial symmetry of light generated in the parametric down-conversion (PDC) process. Therefore, this effect is usually undesirable and must be compensated for. However, high gain may be used to overcome the destructive role of anisotropy in order to generate bright two-mode correlated twin-beams. In this work, we provide a rigorous theoretical description of the spatial properties of bright squeezed light in the presence of strong anisotropy. We investigate a single crystal and a system of two crystals with an air gap (corresponding to a nonlinear SU(1,1) interferometer) and demonstrate the generation of bright correlated twin-beams in such configurations at high gain due to anisotropy. We explore the mode structure of the generated light and show how anisotropy, together with crystal spacing, can be used for radiation shaping.
AU - Riabinin, M.
AU - Sharapova, Polina
AU - Meier, Torsten
ID - 37334
IS - 14
JF - Optics Express
KW - Atomic and Molecular Physics
KW - and Optics
SN - 1094-4087
TI - Bright correlated twin-beam generation and radiation shaping in high-gain parametric down-conversion with anisotropy
VL - 29
ER -
TY - JOUR
AU - Geraldi, Andrea
AU - De, Syamsundar
AU - Laneve, Alessandro
AU - Barkhofen, Sonja
AU - Sperling, Jan
AU - Mataloni, Paolo
AU - Silberhorn, Christine
ID - 26287
JF - Physical Review Research
SN - 2643-1564
TI - Transient subdiffusion via disordered quantum walks
ER -
TY - JOUR
AU - Tiedau, J.
AU - Engelkemeier, M.
AU - Brecht, Benjamin
AU - Sperling, Jan
AU - Silberhorn, Christine
ID - 21021
JF - Physical Review Letters
SN - 0031-9007
TI - Statistical Benchmarking of Scalable Photonic Quantum Systems
VL - 126
ER -
TY - JOUR
AU - Prasannan, Nidhin
AU - De, Syamsundar
AU - Barkhofen, Sonja
AU - Brecht, Benjamin
AU - Silberhorn, Christine
AU - Sperling, Jan
ID - 26286
JF - Physical Review A
SN - 2469-9926
TI - Experimental entanglement characterization of two-rebit states
VL - 103
ER -
TY - JOUR
AU - Köhnke, S.
AU - Agudelo, E.
AU - Schünemann, M.
AU - Schlettwein, O.
AU - Vogel, W.
AU - Sperling, Jan
AU - Hage, B.
ID - 26285
JF - Physical Review Letters
SN - 0031-9007
TI - Quantum Correlations beyond Entanglement and Discord
ER -