Abdelwahab, A., Gardner, M., Parkash, R., Basta, M., Sapp, J., Veltmann, C., ...
Introduction: Scar-related ventricular tachycardia (VT) is often unmappable. Data regarding the outcomes of ablation for mappable vs unmappable VT are lacking. Methods: Catheter ablation of...
Information systems for building an ERA in the field of ICT for environmental sustainability. (2009)
Geiger, W., Lutz, R., Maurer, L., Pillmann, W., Schmitt, C., Schreiber, M., ...
Hrebicek, J. [Hrsg.]
states for Bernoulli–Anderson models (2008)
P. Karmann, R. A. Römer, M. Schreiber, P. Stollmann
Summary. This paper deals with an issue of Mathematical Physics and Computation. More precisely, the distribution of eigenvalues per unit volume is estimated for Hamiltonians occurring in quantum...
Contribution of the surface dipole to deformation of superconductors (2008)
Lipavský, P., Morawetz, K., Kolacek, J., Brandt, E. H., Schreiber, M.
C. Villagonzalo, R. A. Romer, M. Schreiber, A. Mackinnon
Abstract The scaling behavior of the thermoelectric transport properties in disordered systems is studied in the energy region near the metal-insulator transition. Using an energydependent...
Comparison of Two Models for Bridge-Assisted Charge Transfer (2007)
M. Schreiber, D. Kilin, U. Kleinekathöfer
Based on the reduced density matrix method, we compare two different approaches to calculate the dynamics of the electron transfer in systems with donor, bridge, and acceptor. In the first approach a...
Bound hole states and ferrons in HTSC (2007)
Rubin Sherman, A. Sherman, M. Schreiber
Bound hole states induced by excess oxygen in La 2 CuO 4+ffi are studied in the framework of the extended Hubbard model, using the spin-wave approximation and the Lanczos algorithm. We interpret the...
Thermoelectric Transport Properties in Disordered Systems Near the Anderson Transition (2007)
C. Villagonzalo, R.A. Römer, M. Schreiber
. We study the thermoelectric transport properties in the three-dimensional Anderson model of localization near the metal-insulator transition (MIT). In particular, we investigate the dependence of...
Selective adsorption of solvents in a multiscale device. (2007)
Henning, T., Brandner, J.J., Eichhorn, L., Schubert, K., Schreiber, M., Güngerich, M., ...
Microfluidics and Nanofluidics, 3(2007) S.299-305
Selective adsorption of solvents in a multiscale device. (2006)
Henning, T., Brandner, J.J., Eichhorn, L., Schubert, K., Schreiber, M., Güngerich, M., ...
4th Internat.Conf.on Nanochannels, Microchannels and Minichannels, Limerick, IRL, June 19-21, 2006
Femtosecond formation of collective modes due to meanfield fluctuations (2005)
Morawetz, K., Lipavský, P., Schreiber, M.
Starting from a quantum kinetic equation including the mean field and a conserving relaxation-time approximation we derive an analytic formula which describes the time dependence of the dielectric...
Multiscaling, Ergodicity and Localization in Quasiperiodic Chains (2004)
Cerovski, V. Z., Schreiber, M., Grimm, U.
We report results of numerical simulations of wave-packet dynamics in a class of chains consisting of two types of weakly coupled clusters arranged in a quasiperiodic sequence. Properties of...
Localization of non-interacting electrons in thin layered disordered systems (2004)
Cerovski, V. Z., Singh, R. K. Brojen, Schreiber, M.
Localization of electronic states in disordered thin layered systems with b layers is studied within the Anderson model of localization using the transfer-matrix method and finite-size scaling of the...
Correlated two-particle scattering on finite cavities (2004)
Morawetz, K., Schreiber, M., Schmidt, B., Ficker, A., Lipavský, P.
The correlated two-particle problem is solved analytically in the presence of a finite cavity. The method is demonstrated here in terms of exactly solvable models for both the cavity as well as the...
Faville, M.J., Vecchies, A.C., Schreiber, M., Drayton, M.C., Hughes, L.J., Jones, E.S., ...
A molecular marker-based map of perennial ryegrass (Lolium perenne L.) has been constructed through the use of polymorphisms associated with expressed sequence tags (ESTs). A pair-cross between...
Faville, M.J., Vecchies, A.C., Schreiber, M., Drayton, M.C., Hughes, L.J., Jones, E.S., ...
A molecular marker-based map of perennial ryegrass (Lolium perenne L.) has been constructed through the use of polymorphisms associated with expressed sequence tags (ESTs). A pair-cross between...
Finite-Size Scaling of the Level Compressibility at the Anderson Transition (2001)
Ndawana, M. L., Römer, R. A., Schreiber, M.
We compute the number level variance $\Sigma_{2}$ and the level compressibility $\chi$ from high precision data for the Anderson model of localization and show that they can be used in order to...
Cain, P., Ndawana, M. L., Römer, R. A., Schreiber, M.
In a recent communication to the cond-mat archives, Suslov [cond-mat/0105325] severely criticizes a multitude of numerical results obtained by various groups for the critical exponent $\nu$ of the...
Integer quantum Hall transition in the presence of a long-range-correlated quenched disorder (2001)
Cain, P., Raikh, M. E., Roemer, R. A., Schreiber, M.
We theoretically study the effect of long-ranged inhomogeneities on the critical properties of the integer quantum Hall transition. For this purpose we employ the real-space renormalization-group...
Metal-insulator transition in anisotropic systems (2000)
F. Milde, R. A. Romer, M. Schreiber
Abstract We study the three-dimensional Anderson model of localization with anisotropic hopping, i.e., weakly coupled chains and weakly coupled planes. In our extensive numerical study we identify...
An Exact-Diagonalization Study of Rare Events in Disordered Conductors (2000)
V. Uski, B. Mehlig, R. A. Römer, M. Schreiber
We determine the statistical properties of wave functions in disordered quantum systems by exact diagonalization of one-, two- and quasi-one dimensional tight-binding Hamiltonians. We find that the...
Numerical results for two interacting particles in a random environment (1999)
Roemer, R. A., Leadbeater, M., Schreiber, M.
Much evidence has been collected to date which shows that repulsive electron-electron interaction can lead to the formation of particle pairs in a one-dimensional random energy landscape. The...
Quantum transport and momentum conserving dephasing (1999)
Knittel, I., Gagel, F., Schreiber, M.
We study numerically the influence of momentum-conserving dephasing on the transport in a disordered chain of scatterers. Loss of phase memory is caused by coupling the transport channels to...
Transport properties near the Anderson transition (1999)
C. Villagonzalo, R.A. Römer, M. Schreiber
. The electronic transport properties in the presence of a temperature gradient rT in disordered systems near the metal-insulator transition (MIT) are considered. The d.c. conductivity oe, the...
Numerical Results for Two Interacting Particles in a Random Environment (1999)
R. A. Römer, M. Leadbeater, M. Schreiber
. Much evidence has been collected to date which shows that repulsive electronelectron interaction can lead to the formation of particle pairs in a one-dimensional random energy landscape. The...
Phase diagram of the three-dimensional Anderson model of localization with random hopping (1999)
P. Cain, R.A. Römer, M. Schreiber
. We examine the localization properties of the three-dimensional (3D) Anderson Hamiltonian with off-diagonal disorder using the transfer-matrix method (TMM) and finitesize scaling (FSS). The...
Combinatorial Optimization by Iterative Partial Transcription (1999)
A. Möbius, B. Freisleben, P. Merz, M. Schreiber
A procedure is presented which considerably improves the performance of local search based heuristic algorithms for combinatorial optimization problems. It increases the average "gain" of...
V. Uski, R.A. Römer, B. Mehlig, M. Schreiber
. We have calculated wave functions and matrix elements of the dipole operator in the two- and three-dimensional Anderson model of localization and have studied their statistical properties in the...
Smoothed universal correlations in the two-dimensional Anderson model (1998)
V. Uski, B. Mehlig, R. A. Römer, M. Schreiber
We report on calculations of smoothed spectral correlations in the twodimensional Anderson model for weak disorder. As pointed out in (M. Wilkinson, J. Phys. A: Math. Gen. 21, 1173 (1988)), an...
Energy Levels of Quasiperiodic Hamiltonians, Spectral Unfolding, and Random Matrix Theory (1998)
M. Schreiber, U. Grimm, R. A. Römer, J. X. Zhong
We consider a tight-binding Hamiltonian defined on the quasiperiodic Ammann-Beenker tiling. Although the density of states (DOS) is rather spiky, the integrated DOS (IDOS) is quite smooth and can be...
Two interacting particles in a random potential: The random matrix model revisited (1998)
T. Vojta, R. A. Römer, M. Schreiber, Thomas Vojta, Rudolf A. Romer, ...
We reinvestigate the validity of mapping the problem of two onsite interacting particles in a random potential onto an effective random matrix model. To this end we first study numerically how the...
A. Möbius, A. Díaz-Sánchez, B. Freisleben, M. Schreiber, A. Fachat, K. H. Hoffmann, ...
Among the various heuristic approaches to combinatorial optimization, localsearch -based evolutionary algorithms have been particularly successful for the last years. We present two algorithms...
Level-Spacing Distributions of Planar Quasiperiodic Tight-Binding Models (1997)
Zhong, J. X., Grimm, U., Roemer, R. A., Schreiber, M.
We study the statistical properties of energy spectra of two-dimensional quasiperiodic tight-binding models. We demonstrate that the nearest-neighbor level spacing distributions of these non-random...
Critical behavior in the two-dimensional Anderson model of. . . (1997)
A. Eilmes, R.A. Römer, M. Schreiber, Andrzej Eilmes, Rudolf A. Romer, Michael Schreiber
We study a variant of the two-dimensional (2D) Anderson model of localization in which the disorder is represented by randomly chosen hopping terms. The density of states reveals an abnormally strong...
The two-dimensional Anderson model of localization with random hopping (1997)
A. Eilmes, R. A. Römer, M. Schreiber, Preprint Sfb, Andrzej Eilmes, Rudolf A. Romer, ...
We examine the localization properties of the 2D Anderson Hamiltonian with off-diagonal disorder. Investigating the behavior of the participation numbers of eigenstates as well as studying their...
Level-Spacing Distributions of Planar Quasiperiodic Tight-Binding Models (1997)
U. Grimm, R.A. Römer, Preprint Sfb, J. X. Zhong, J. X. Zhong, ...
We study statistical properties of energy spectra of two-dimensional quasiperiodic tight-binding models. Taking into account the symmetries of models defined on various finite approximants of...
R. A. Römer, M. Schreiber, Preprint Sfb, Rudolf A. Romer, Michael Schreiber
We study two interacting particles in a random potential chain by a transfer matrix method which allows a correct handling of the symmetry of the twoparticle wave function, but introduces an...
Braun, J., Hammerschmidt, M., Schreiber, M., Heidler, R., Hörl, W. H.
Background. Zinc protoporphyrin (ZPP), a metabolic intermediate generated in the red blood cell by incorporation of zinc instead of iron, has been suggested to be a sensitive and specific parameter...
Fos is an essential component of the mammalian UV response. (1996)
Schreiber, M., Baumann, B., Cotten, M., Angel, P., Wagner, E.F.
The EMBO Journal, 14(1995) S.5338-49
GLASS - A Distributed MHEG-Based Multimedia System (1995)
H. Cossmann, C. Griwodz, G. Grassel, M. Pühlhöfer, M. Schreiber, R. Steinmetz, ...
: This paper is about GLASS 2 , a distributed multimedia system that is currently under development. The multimedia department of the IBM European Networking Center in Heidelberg, Germany,...
Interoperable Itv Systems Based On Mheg
H. Cossmann, C. Griwodz, G. Grassel, M. Pühlhöfer, M. Schreiber, R. Steinmetz, ...
Today's interactive television systems are using proprietary communication protocols and interchange formats. To provide interoperability at the application level the next generation of...
Komata, T, Kanzawa, T, Takeuchi, H, Germano, I M, Schreiber, M, Kondo, Y, ...
Cyclin-dependent kinase inhibitors (CDKIs) are considered as novel anticancer agents because of their ability to induce growth arrest or apoptosis in tumour cells. It has not yet been fully...