Auflistung Fakultät für Mathematik und Physik nach Erscheinungsdatum

Auflistung Fakultät für Mathematik und Physik nach Erscheinungsdatum

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  • Compact generation in partially ordered sets 
    Erné, Marcel (Cambridge : Cambridge University Press, 1987)
    Several` “classical” results on algebraic complete lattices extend to algebraic posets and, more generally, to so called compactly generated posets; but, of course, there may arise difficulties in the absence of certain ...
  • Isotopic dependence of nuclear charge radii and pairing energies 
    Regge, U.; Zawischa, Dieter (College Park, MD : American Physical Society, 1988)
    With a residual interaction consisting of density-independent two- and three-body parts, we obtain within Hartee-Fock-Bogolyubov theory at the same time good results on the odd-even staggering of charge radii and on trends ...
  • Quantum suppression of irregularity in the spectral properties of the kicked rotator 
    Frahm, Holger; Mikeska, H.J. (College Park (Maryland) : American Physical Society, 1988)
    The statistical properties of the quasienergy spectrum are used to measure the influence of quantum effects on the quantum kicked rotator which displays chaotic behavior in the classical limit. A transition from ...
  • Frahm and Mikeska reply 
    Frahm, Holger; Mikeska, H.J. (College Park (Maryland) : American Physical Society, 1988)
    [no abstract available]
  • Stochastic formulation of energy level statistics 
    Hasegawa, H.; Mikeska, H.J.; Frahm, Holger (College Park (Maryland) : American Physical Society, 1988)
    It is shown that the joint distribution of energy eigenvalues for systems with a varying degree of nonintegrability which has been obtained dynamically by T. Yukawa [Phys. Rev. Lett. 54, 1883 (1985)] can also be deduced ...
  • Quantization conditions for the periodic Toda chain: Inadequacy of Bethe ansatz methods 
    Fowler, Michael; Frahm, Holger (College Park (Maryland) : American Physical Society, 1989)
    Gutzwiller has developed a scheme for determining the energy levels of a finite quantum Toda lattice. We present a numerical analysis using his method and calculate low-lying energy levels for some small lattices. We check ...
  • Does it make sense to talk about NΔ phase shifts? 
    Garcilazo, H.; Mizutani, T.; Pea, M.T.; Sauer, Peter Ulrich (College Park, MD : American Physical Society, 1990)
    The question of whether one can consistently define and extract nucleon-delta scattering parameters, phase shifts, and inelasticities from the partial-wave NN→NΔ amplitudes is discussed. We have studied the unitarity ...
  • Magnetic dipole strength functions in heavy deformed nuclei 
    Zawischa, Dieter; MacFarlane, Malcolm; Speth, Josef (College Park, MD : American Physical Society, 1990)
    The isovector spin-flip M1 strength function in the deformed heavy nuclei 156Gd and 238U is calculated in the quasiparticle random-phase approximation. Interaction parameters are adjusted to reproduce the energies of ...
  • Effect of the nucleon-delta interaction on properties of the three-nucleon ground state 
    Pea, M.T.; Henning, H.; Sauer, P.U. (College Park, MD : American Physical Society, 1990)
    Wave-function components containing a single Δ isobar are included in the calculation of the three-nucleon bound state. In extension to previous work, a nucleon-Δ potential based on meson exchange is incorporated in the ...
  • Critical exponents for the one-dimensional Hubbard model 
    Frahm, Holger; Korepin, V.E. (College Park (Maryland) : American Physical Society, 1990)
    Using results on the scaling of energies with the size of the system and the principles of conformal quantum field theory, we calculate the asymptotics of correlation functions for the one-dimensional Hubbard model in the ...
  • Some remarks concerning rank 2 bundles and Chow groups 
    Hulek, K.; Van de Ven, A. (Berlin : De Gruyter, 1991)
    [No abstract available]
  • Model computations of the influence of carbon impurities on the ionization relaxation in krypton shock waves 
    Klages, D.; Demmig, F. (Cambridge : Cambridge University Press, 1991)
    Chemical reactions in shock waves can be strongly affected by minute impurity concentrations. Thus it is not adequate to take into account the additional impurity electron production in relaxation studies simply by global ...
  • Flux dynamics and growth of the superconducting phase 
    Frahm, Holger; Ullah, Salman; Dorsey, Alan T. (College Park (Maryland) : American Physical Society, 1991)
    We present a detailed investigation of the growth of the superconducting phase in a magnetic field. For type-I superconductors, the planar normal-superconductor interface is dynamically unstable. In the nucleation regime ...
  • Correlation functions of the one-dimensional Hubbard model in a magnetic field 
    Frahm, Holger; Korepin, V.E. (College Park (Maryland) : American Physical Society, 1991)
    We present a general method for the calculation of correlation functions in the repulsive one-dimensional Hubbard model at less than half-filling in a magnetic field h. We describe the dependence of the critical exponents ...
  • Faddeev equations with three-nucleon force in momentum space 
    Stadler, A.; Glöckle, W.; Sauer, P.U. (College Park, MD : American Physical Society, 1991)
    Modified Faddeev equations that allow the inclusion of irreducible three-body forces in addition to two-body interactions are formulated and the technical apparatus for their solution in momentum space is described. Results ...
  • Phase diagram and critical behavior of the adsorption system O/Ru(001): Comparison with lattice-gas models 
    Piercy, P.; De'Bell, K.; Pfnür, Herbert (College Park, MD : American Physical Society, 1992)
    The chemisorption of oxygen on the Ru(001) surface shows ordered p(2×2) and p(1×2) phases at coverages of 1/4 and 1/2 monolayer, respectively, that are observed to undergo apparently continuous transitions to a disordered ...
  • Prime power divisors of binomial coefficients 
    Sander, J.W. (Berlin : De Gruyter, 1992)
    [No abstract available]
  • An asymptotic formula for a-th powers dividing binomial coefficients 
    Sander, J.W. (Cambridge : Cambridge University Press, 1992)
    [No abstract available]
  • Effect of the three-nucleon force on the three-nucleon ground state: Reducible and irreducible contributions 
    Stadler, A.; Sauer, P.U. (College Park, MD : American Physical Society, 1992)
    The Tucson-Melbourne two-pion exchange three-nucleon force is split into a reducible part mediated by Δ excitation and an irreducible part not mediated by Δ excitation. The triton binding energy is calculated. The irreducible ...
  • Effect of the NΔ interaction on observables of the πNN and γNN systems 
    Peña, M.T.; Garcilazo, H.; Oelfke, U.; Sauer, P.U. (College Park, MD : American Physical Society, 1992)
    Effects on the hadronic and electromagnetic properties of the two-nucleon system above pion threshold, arising from the interaction of the Δ isobar with nucleons, are investigated. The instantaneous nucleon-Δ potential is ...

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