2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR75 papers
- University of MünsterDE37 papers
- Los Alamos National LaboratoryUS33 papers
- Max Planck Institute for Dynamics and Self-OrganizationDE26 papers
- Observatoire de la Côte d’AzurFR26 papers
- University of StuttgartDE25 papers
- Friedrich-Alexander-Universität Erlangen-NürnbergDE23 papers
- Heinrich Heine University DüsseldorfDE23 papers
- Northwestern UniversityUS23 papers
- Deutsches Elektronen-Synchrotron DESYDE22 papers
- Bogolyubov Institute for Theoretical PhysicsUA21 papers
- ETH ZurichCH21 papers
43 papers · 1 filter
Algebraic Surfaces and their Moduli Spaces: Real, Differentiable and Symplectic Structures
Fabrizio Catanese
The article surveys published and not yet published results about moduli spaces of algebraic surfaces.
On varieties whose universal cover is a product of curves
Fabrizio Catanese, Marco Franciosi
We investigate a necessary condition for a compact complex manifold X of dimension n in order that its universal cover be the Cartesian product of a curve $C = \PP^1 or \HH$:…
Energy landscapes and their relation to thermodynamic phase transitions
Michael Kastner
In order to better understand the occurrence of phase transitions, we adopt an approach based on the study of energy landscapes: The relation between stationary points of the poten…
Gravitational collapse and the formation of black holes for the spherically symmetric Einstein-Vlasov system
Hakan Andreasson, Markus Kunze, Gerhard Rein
We review results on the spherically symmetric, asymptotically flat Einstein-Vlasov system. We focus on a recent result where we found explicit conditions on the initial data which…
Grain size dependence of barchan dune dynamics
C. Groh, N. Aksel, I. Rehberg +1
The dependence of the barchan dune dynamics on the size of the grains involved is investigated experimentally. Downsized barchan dune slices are observed in a narrow water flow tub…
Surface Instabilities and Magnetic Soft Matter
Christian Gollwitzer, Marina Krekhova, Guenter Lattermann +2
We report on the formation of surface instabilities in a layer of thermoreversible ferrogel when exposed to a vertical magnetic field. Both static and time dependent magnetic field…
Feedback Stabilization Methods for the Numerical Solution of Systems of Ordinary Differential Equations
Iasson Karafyllis, Lars Grune
In this work we study the problem of step size selection for numerical schemes, which guarantees that the numerical solution presents the same qualitative behavior as the original…
Viscoelasticity and shear flow of concentrated, non-crystallizing colloidal suspensions: Comparison with Mode-Coupling Theory
Miriam Siebenbuerger, Matthias Fuchs, Henning Winter +1
We present a comprehensive rheological study of a suspension of thermosensitive particles dispersed in water. The volume fraction of these particles can be adjusted by the temperat…
Quotients of products of curves, new surfaces with and their fundamental groups
Ingrid Bauer, Fabrizio Catanese, Fritz Grunewald +1
The first main purpose of this paper is to contribute to the existing knowledge about the complex projective surfaces of general type with and their moduli spaces,…
Traveling spatially periodic forcing of phase separation
V. Weith, A. Krekhov, W. Zimmermann
We present a theoretical analysis of phase separation in the presence of a spatially periodic forcing of wavenumber q traveling with a velocity v. By an analytical and numerical st…
Dumbbell diffusion in a spatially periodic potential
Jochen Bammert, Steffen Schreiber, Walter Zimmermann
We present a numerical investigation of the Brownian motion and diffusion of a dumbbell in a two-dimensional periodic potential. Its dynamics is described by a Langevin model inclu…
Construction of Large Constant Dimension Codes With a Prescribed Minimum Distance
Axel Kohnert, Sascha Kurz
In this paper we construct constant dimension space codes with prescribed minimum distance. There is an increased interest in space codes since a paper by Koetter and Kschischang w…
Quantum Diffusion of Matter Waves in 2D Speckle Potentials
C. Miniatura, R. C. Kuhn, D. Delande +1
This paper investigates quantum diffusion of matter waves in two-dimensional random potentials, focussing on expanding Bose-Einstein condensates in spatially correlated optical spe…
Formation of regular structures in the process of phase separation
Alexei Krekhov
Phase separation under directional quenching has been studied in a Cahn-Hilliard model. In distinct contrast to the disordered patterns which develop under a homogeneous quench per…
Mott-Hubbard gap closure and structural phase transition in the oxyhalides TiOBr and TiOCl under pressure
C. A. Kuntscher, A. Pashkin, H. Hoffmann +9
Pressure-dependent transmittance and reflectance spectra of TiOBr and TiOCl single crystals at room temperature suggest the closure of the Mott-Hubbard gap, i.e., the gap is filled…
Flat galaxies with dark matter halos - existence and stability
Roman Firt, Gerhard Rein, Martin Seehafer
We consider a model for a flat, disk-like galaxy surrounded by a halo of dark matter, namely a Vlasov-Poisson type system with two particle species, the stars which are restricted…
The rationality of certain moduli spaces of curves of genus 3
Ingrid Bauer, Fabrizio Catanese
We show, for each algebraically closed field, the rationality of the following two moduli spaces: M(3,3) parametrizing pairs (C, η) where C has genus 3 and ηis a 3-torsion divisor…
Nature and distribution of iron sites in a sodium silicate glass investigated by neutron diffraction and EPSR simulation
Coralie Weigel, L. Cormier, Georges Calas +2
The short and medium range structure of a NaFeSi2O6 (NFS) glass has been investigated by high-resolution neutron diffraction with Fe isotopic substitution, combined with Empirical…
Theory of Thermodynamic Stresses in Colloidal Dispersions at the Glass Transition
D. Hajnal, O. Henrich, J. J. Crassous +4
We discuss the nonlinear rheology of dense colloidal dispersions at the glass transition. A first principles approach starting with interacting Brownian particles in given arbitrar…
Rolling ferrofluid drop on the surface of a liquid
V. Sterr, R. Krauss, K. I. Morozov +3
We report on the controlled transport of drops of magnetic liquid, which are swimming on top of a non-magnetic liquid layer. A magnetic field which is rotating in a vertical plane…
Nonanalyticities of the entropy induced by saddle points of the potential energy landscape
Michael Kastner, Oliver Schnetz, Steffen Schreiber
The relation between saddle points of the potential of a classical many-particle system and the analyticity properties of its Boltzmann entropy is studied. For finite systems, each…
Coherent backscattering of Bose-Einstein condensates in two-dimensional disorder potentials
Michael Hartung, Thomas Wellens, Cord A. Mueller +2
We study quantum transport of an interacting Bose-Einstein condensate in a two-dimensional disorder potential. In the limit of vanishing atom-atom interaction, a sharp cone in the…
Shear stresses of colloidal dispersions at the glass transition in equilibrium and in flow
J. J. Crassous, M. Siebenbürger, M. Ballauff +4
We consider a model dense colloidal dispersion at the glass transition, and investigate the connection between equilibrium stress fluctuations, seen in linear shear moduli, and the…
Nonempirical Density Functionals Investigated for Jellium: Spin-Polarized Surfaces, Spherical Clusters, and Bulk Linear Response
Jianmin Tao, John P. Perdew, Luis Miguel Almeida +2
Earlier tests show that the Tao-Perdew-Staroverov-Scuseria (TPSS) nonempirical meta-generalized gradient approximation (meta-GGA) for the exchange-correlation energy yields more ac…