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
28 papers · 1 filter
Remarks on syzygies of -gonal curves
Marian Aprodu
We apply a degenerate version of a result due to Hirschowitz, Ramanan and Voisin to verify Green and Green-Lazarsfeld conjectures over explicit open sets inside each -gonal stra…
Anomalous Roughening of Viscous Fluid Fronts in Spontaneous Imbibition
J. Soriano, A. Mercier, R. Planet +3
We report experiments on spontaneous imbibition of a viscous fluid by a model porous medium in the absence of gravity. The average position of the interface satisfies Washburn's la…
Topological approach to phase transitions and inequivalence of statistical ensembles
Michael Kastner
The relation between thermodynamic phase transitions in classical systems and topology changes in their state space is discussed for systems in which equivalence of statistical ens…
The 3-cuspidal quartic and braid monodromy of degree 4 coverings
Fabrizio Catanese, Bronislaw Wajnryb
We study the discriminant of a degree 4 extension given by a deformed bidouble cover, i.e., by equations z^2= u + a w, w^2= v + bz. We first show that the discriminant surface is a…
Stripe-hexagon competition in forced pattern forming systems with broken up-down symmetry
R. Peter, M. Hilt, F. Ziebert +7
We investigate the response of two-dimensional pattern forming systems with a broken up-down symmetry, such as chemical reactions, to spatially resonant forcing and propose related…
Ratchet behavior in nonlinear Klein-Gordon systems with point-like inhomogeneities
Luis Morales-Molina, Franz G. Mertens, Angel Sanchez
We investigate the ratchet dynamics of nonlinear Klein-Gordon kinks in a periodic, asymmetric lattice of point-like inhomogeneities. We explain the underlying rectification mechani…
Vortex motion in a finite-size easy-plane ferromagnet and application to a nanodot
Denis D. Sheka, Juan P. Zagorodny, Jean-Guy Caputo +2
We study the motion of a non-planar vortex in a circular easy-plane ferromagnet, which imitates a magnetic nanodot. Analysis was done using numerical simulations and a new collecti…
Localization of nonlinear excitations in curved waveguides
Yu. B. Gaididei, P. L. Christiansen, P. G. Kevrekidis +2
Motivated by the example of a curved waveguide embedded in a photonic crystal, we examine the effects of geometry in a ``quantum channel'' of parabolic form. We study the linear ca…
Coherent inelastic backscattering of intense laser light by cold atoms
V. Shatokhin, C. A. Mueller, A. Buchleitner
We present a nonperturbative treatment of coherent backscattering of intense laser light from cold atoms, and predict a nonvanishing backscattering signal even at very large intens…
On propagation failure in 1 and 2 dimensional excitable media
Georg A. Gottwald, Lorenz Kramer
We present a non-perturbative technique to study pulse dynamics in excitable media. The method is used to study propagation failure in one-dimensional and two-dimensional excitable…
The moduli space of surfaces with
Ingrid C. Bauer, Fabrizio M. E. Catanese, Roberto Pignatelli
In this paper we answer a question posed by Horikawa in 1978, who showed that the above moduli space is composed of 11 locally closed strata building up 4 irreducible components an…
Beauville surfaces without real structures, I
Ingrid Bauer, Fabrizio Catanese, Fritz Grunewald
Inspired by a construction by Arnaud Beauville of a surface of general type with , the second author defined the Beauville surfaces as the surfaces which are rigid…
Thermodynamics of quantum Brownian motion with internal degrees of freedom: the role of entanglement in the strong-coupling quantum regime
Christian Hoerhammer, Helmut Buettner
We study the influence of entanglement on the relation between the statistical entropy of an open quantum system and the heat exchanged with a low temperature environment. A model…
On first order Congruences of Lines in with irreducible fundamental Surface
Pietro De Poi
In this article we study congruences of lines in , and in particular of order one. After giving general results, we obtain a complete classification in the case of $\…
Congruences of Lines with one-dimensional focal locus
Pietro De Poi
In this article we obtain the classification of the congruences of lines with one-dimensional focal locus. It turns out that one can restrict to study the case of .
Threefolds with big and nef anticanonical bundles I
Priska Jahnke, Thomas Peternell, Ivo Radloff
We start the classification of smooth projective threefolds X whose anticanonical bundles -K_X are big and nef but not ample. In this paper we treat the case b_2(X) = 2 and the mor…
Projective Threefolds with Holomorphic Conformal Structure
Priska Jahnke, Ivo Radloff
The authors give a complete classification of projective threefolds admitting a holomorphic conformal structure. A Corollary is the complete list of projective threefolds, whose ta…
Characterization of entanglement of more than two qubits with Bell inequalities and global entanglement
J. Endrejat, H. Buettner
It is shown that the entanglement-structure of 3- and 4-qubit states can be characterized by optimized operators of the Mermin-Klyshko type. It is possible to discriminate between…
Fluid pumped by magnetic stress
Robert Krauss, Mario Liu, Bert Reimann +2
A magnetic field rotating on the free surface of a ferrofluid layer is shown to induce considerable fluid motion toward the direction the field is rolling. The measured flow veloci…
Diffeomorphism of simply connected algebraic surfaces
Fabrizio Catanese, Bronislaw Wajnryb
In this paper we show that even in the case of simply connected minimal algebraic surfaces of general type, deformation and differentiable equivalence do not coincide. Exhibiting s…
Comment on "On the importance of the free energy for elasticity under pressure"
Gerd Steinle-Neumann, R. E. Cohen
Marcus et al. (Marcus P, Ma H and Qiu S L 2002 J. Phys.: Condens. Matter 14 L525) claim that thermodynamic properties of materials under pressure must be computed using the Gibbs f…
Nonlinear Fluid Dynamics Description of non-Newtonian Fluids
Harald Pleiner, Mario Liu, Helmut R. Brand
Nonlinear hydrodynamic equations for visco-elastic media are discussed. We start from the recently derived fully hydrodynamic nonlinear description of permanent elasticity that uti…
Gorenstein Fano threefolds with base points in the anticanonical system
Priska Jahnke, Ivo Radloff
We classify all Gorenstein Fano threefolds with at worst canonical singularities for which the anticanonical system has a nonempty base locus.
Unattainability of a purely topological criterion for the existence of a phase transition for non-confining potentials
Michael Kastner
The relation between thermodynamic phase transitions in classical systems and topology changes in their configuration space is discussed for a one-dimensional, analytically tractab…