Browsing by Subject "dynamics"

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  • Rapp, Akos; Schmitteckert, Peter; Takacs, Gabor; Zarand, Gergely (Bristol : IOP Publishing Ltd., 2013-01-28)
    We determine numerically the single-particle and the two-particle spectrum of the three-state quantum Potts model on a lattice by using the density matrix renormalization group method, and extract information on the ...
  • Drenkelforth, S.; Buening, G. Kleine; Will, J.; Schulte, T.; Murray, N.; Ertmer, Wolfgang; Santos, Luis; Arlt, Jan J. (Bristol : IOP Publishing Ltd., 2008)
    We investigate both experimentally and theoretically disorder-induced damping of Bloch oscillations of Bose-Einstein condensates in optical lattices. The spatially inhomogeneous force responsible for the damping is realized ...
  • Lakies, Marcel (Hamburg : Aircraft Design and Systems Group (AERO), Department of Automotive and Aeronautical Engineering, Hamburg University of Applied Sciences, 2019)
    In this report an equation is derived to calculate the dynamic effect of primary and secondary aircraft cabin air contamination. The equation is applied in order to understand implications and hazards. Primary contamination ...
  • Matjeschk, R.; Schneider, C; Enderlein, M.; Huber, T.; Schmitz, H.; Glueckert, J.; Schaetz, T. (Bristol : IOP Publishing Ltd., 2012)
    We examine the prospects of discrete quantum walks (QWs) with trapped ions. In particular, we analyze in detail the limitations of the protocol of Travaglione and Milburn (2002 Phys. Rev. A 65 032310) that has been implemented ...
  • Indris, Sylvio; Heitjans, Paul; Behrens, Harald; Zorn, Reiner; Frick, Bernhard (College Park, MD : American Physical Society, 2005)
    We studied the dynamics of dissolved water in aluminosilicate glasses with the compositions NaAlSi3O8⋅0.3H2O, NaAlSi3O8⋅1.3H2O and Ca0.5AlSi3O8⋅1.3H2O using quasielastic neutron scattering. As shown by near-infrared ...
  • Imbihl, R. (Bristol : IOP Publishing Ltd., 2003)
    The internal reaction-induced fluctuations which occur in catalytic CO oxidation on a Pt field emitter tip have been studied using field electron microscopy (FEM) as a spatially resolving method. The structurally heterogeneous ...
  • Weymann, D.; Well, R.; Flessa, H.; Heide, Carolin von der; Deurer, M.; Meyer, K.; Konrad, C.; Walther, W. (Göttingen : Copernicus GmbH, 2008)
    We investigated the dynamics of denitrification and nitrous oxide (N2O) accumulation in 4 nitrate (NO3-) contaminated denitrifying sand and gravel aquifers of northern Germany (Fuhrberg, Sulingen, Thulsfelde and Gottingen) ...
  • Morgenstern, Karina; Rieder, Karl-Heinz (Bristol : IOP Publishing Ltd., 2005)
    Formation and motion of copper adatoms and addimers on Ag( 1 1 1) are investigated with low-temperature scanning tunnelling microscopy between 6 and 25 K. Adatoms move between fcc and hcp sites with a strong preference for ...
  • Wan, Yong; Gebert, Florian; Wuebbena, Jannes B.; Scharnhorst, Nils; Amairi, Sana; Leroux, Ian D.; Hemmerling, Boerge; Loerch, Niels; Hammerer, Klemens; Schmidt, Piet O. (London : Nature Publishing Group, 2014)
    Precision spectroscopy of atomic and molecular ions offers a window to new physics, but is typically limited to species with a cycling transition for laser cooling and detection. Quantum logic spectroscopy has overcome ...
  • Ahufinger, V.; Mebrahtu, A.; Corbalan, R.; Sanpera, A. (Bristol : IOP Publishing Ltd., 2007)
    We study the possibility of implementing a quantum switch and a quantum memory using matter-wave lattice solitons and making them interact with 'effective' potentials (barrier/well) corresponding to defects of the optical ...
  • Kurz, Heiko G.; Kretschmar, Martin; Binhammer, Thomas; Nagy, Tamas; Ristau, Detlev; Lein, Manfred; Morgner, Uwe; Kovacev, Milutin (College Park : American Physical Society, 2016)
    High-order harmonic spectroscopy allows one to extract information on fundamental quantum processes, such as the exit time in the tunneling of an electron through a barrier with attosecond time resolution and molecular ...
  • Scherer, M.; Lücke, Bernd; Peise, J.; Topic, O.; Gebreyesus, G.; Deuretzbacher, Frank; Ertmer, Wolfgang; Santos, Luis; Klempt, Carsten; Arlt, Jan J. (College Park : American Physical Society, 2013)
    We present an analytical model for the theoretical analysis of spin dynamics and spontaneous symmetry breaking in a spinor Bose-Einstein condensate (BEC). This allows for an excellent intuitive understanding of the processes ...
  • Ubbelohde, Niels; Roszak, K.; Hohls, Frank; Maire, N.; Haug, Rolf J.; Novotny, T. (London : Nature Publishing Group, 2012-04-23)
    Studies of non-equilibrium current fluctuations enable assessing correlations involved in quantum transport through nanoscale conductors. They provide additional information to the mean current on charge statistics and the ...