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
48 papers · 1 filter
On volume preserving complex structures on real tori
Fabrizio Catanese, Keiji Oguiso, Thomas Peternell
A basic problem in the classification theory of compact complex manifolds is to give simple characterizations of complex tori. It is well known that a compact Kähler manifold h…
On a problem of Hajdu and Tengely
Samir Siksek, Michael Stoll
We prove a result that finishes the study of primitive arithmetic progressions consisting of squares and fifth powers that was carried out by Hajdu and Tengely in a recent paper: T…
Qualitative Robustness of Support Vector Machines
Robert Hable, Andreas Christmann
Support vector machines have attracted much attention in theoretical and in applied statistics. Main topics of recent interest are consistency, learning rates and robustness. In th…
Burniat surfaces II: secondary Burniat surfaces form three connected components of the moduli space
Ingrid Bauer, Fabrizio Catanese
We prove in one go that each of the 4 families of Burniat surfaces with K^2 = 6,5,4, is a connected component of the moduli space of surfaces of general type. We prove also the rat…
Particle dynamics of a cartoon dune
Christopher Groh, Ingo Rehberg, Christof A. Kruelle
The spatio-temporal evolution of a downsized model for a desert dune is observed experimentally in a narrow water flow channel. A particle tracking method reveals that the migratio…
Dynamics and stability of Bose-Einstein solitons in tilted optical lattices
E. Diaz, C. Gaul, R. P. A. Lima +2
Bloch oscillations of Bose-Einstein condensates realize sensitive matter-wave interferometers. We investigate the dynamics and stability of bright-soliton wave packets in one-dimen…
Multiple vortex-antivortex pair generation in magnetic nanodots
Yuri Gaididei, Volodymyr P. Kravchuk, Denis D. Sheka +1
The interaction of a magnetic vortex with a rotating magnetic field causes the nucleation of a vortex--antivortex pair leading to a vortex polarity switching. The key point of this…
Dynamics of a trapped Brownian particle in shear flows
Lukas Holzer, Jochen Bammert, Roland Rzehak +1
The Brownian motion of a particle in a harmonic potential, which is simultaneously exposed either to a linear shear flow or to a plane Poiseuille flow is investigated. In the shear…
3D Brownian Diffusion of Submicron-Sized Particle Clusters
Martin Hoffmann, Claudia S. Wagner, Ludger Harnau +1
We report on the translation and rotation of particle clusters made through the combination of spherical building blocks. These clusters present ideal model systems to study the mo…
Prandtl number dependence of convection driven dynamos in rotating spherical fluid shells
R. D. Simitev, F. H. Busse
The value of the Prandtl number exerts a strong influence on convection-driven dynamos in rotating spherical shells filled with electrically conducting fluids. Low Prandtl numb…
Moduli spaces and braid monodromy types of bidouble covers of the quadric
Fabrizio Catanese, Michael Lönne, Bronislaw Wajnryb
Bidouble covers of the quadric Q are parametrized by connected families depending on four positive integers a,b,c,d. In the special case where b=d we call them abc…
Formation of trapped surfaces for the spherically symmetric Einstein-Vlasov system
Hakan Andreasson, Gerhard Rein
We consider the spherically symmetric, asymptotically flat, non-vacuum Einstein equations, using as matter model a collisionless gas as described by the Vlasov equation. We find ex…
The directed Hausdorff distance between imprecise point sets
Christian Knauer, Maarten Löffler, Marc Scherfenberg +1
We consider the directed Hausdorff distance between point sets in the plane, where one or both point sets consist of imprecise points. An imprecise point is modelled by a disc give…
Direct measurement of shear-induced cross-correlations of Brownian motion
Andreas Ziehl, Jochen Bammert, Lukas Holzer +2
Shear-induced cross-correlations of particle fluctuations perpendicular and along stream-lines are investigated experimentally and theoretically. Direct measurements of the Brownia…
Observation and characterization of laser-driven Phase Space Electron Holes
G. Sarri, M. E. Dieckmann, C. R. D. Brown +8
The direct observation and full characterization of a Phase Space Electron Hole (EH) generated by laser-matter interaction is presented. This structure has been detected via proton…
Minimisation and reduction of 2-, 3- and 4-coverings of elliptic curves
John Cremona, Tom Fisher, Michael Stoll
In this paper we consider models for genus one curves of degree n for n = 2, 3 and 4, which arise in explicit n-descent on elliptic curves. We prove theorems on the existence of mi…
Speed of sound in disordered Bose-Einstein condensates
Christopher Gaul, Nina Renner, Cord A. Mueller
Disorder modifies the sound-wave excitation spectrum of Bose-Einstein condensates. We consider the classical hydrodynamic limit, where the disorder correlation length is much longe…
Nonlinear Schrödinger Equation with Spatio-Temporal Perturbations
Franz G. Mertens, Niurka R. Quintero, A. R. Bishop
We investigate the dynamics of solitons of the cubic Nonlinear Schrödinger Equation (NLSE) with the following perturbations: non-parametric spatio-temporal driving of the form $f(x…
Asymptotic boundary layer method for unstable trajectories: Semiclassics for individual scar wavefunctions
A. Vagov, H. Schomerus, V. V. Zalipaev
We extend the asymptotic boundary layer (ABL) method, originally developed for stable resonator modes, to the description of individual wavefunctions localized around unstable peri…
Structure and interaction of flexible dendrimers in concentrated solution
S. Rosenfeldt, M. Ballauff, P. Lindner +1
We study the influence of mutual interaction on the conformation of flexible poly(propyleneamine) dendrimers of fourth generation in concentrated solution. Mixtures of dendrimers w…
Finite-Temperature Fidelity-Metric Approach to the Lipkin-Meshkov-Glick Model
D. D. Scherer, C. A. Müller, M. Kastner
The fidelity metric has recently been proposed as a useful and elegant approach to identify and characterize both quantum and classical phase transitions. We study this metric on t…
Hard sphere crystallization gets rarer with increasing dimension
J. A. van Meel, B. Charbonneau, A. Fortini +1
We recently found that crystallization of monodisperse hard spheres from the bulk fluid faces a much higher free energy barrier in four than in three dimensions at equivalent super…
Anderson localization of solitons
Krzysztof Sacha, Cord A. Mueller, Dominique Delande +1
At low temperature, a quasi-one-dimensional ensemble of atoms with attractive interaction forms a bright soliton. When exposed to a weak and smooth external potential, the shape of…
Fixed-parameter tractability and lower bounds for stabbing problems
Panos Giannopoulos, Christian Knauer, Gunter Rote +1
We study the following general stabbing problem from a parameterized complexity point of view: Given a set of translates of an object in $\Rd$, find a set of l…