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
25 papers · 1 filter
Susceptibility functions for slow relaxation processes in supercooled liquids and the search for universal relaxation patterns
T. Blochowicz, C. Tschirwitz, S. Benkhof +1
In order to describe the slow response of a glass former we discuss some distribution of correlation times, e.g., the generalized gamma distribution (GG) and an extension thereof (…
Modulated structures in electroconvection in nematic liquid crystals
S. Komineas, H. Zhao, L. Kramer
Motivated by experiments in electroconvection in nematic liquid crystals with homeotropic alignment we study the coupled amplitude equations describing the formation of a stationar…
Critical exponents of directed percolation measured in spatiotemporal intermittency
Peter Rupp, Reinhard Richter, Ingo Rehberg
A new experimental system showing a transition to spatiotemporal intermittency is presented. It consists of a ring of hundred oscillating ferrofluidic spikes. Four of five of the m…
Shear induced instabilities in layered liquids
Guenter K. Auernhammer, Helmut R. Brand, Harald Pleiner
Motivated by the experimentally observed shear-induced destabilization and reorientation of smectic A like systems, we consider an extended formulation of smectic A hydrodynamics.…
A Kawamata-Viehweg Vanishing Theorem on compact Kahler manifolds
Jean-Pierre Demailly, Thomas Peternell
We prove a Kawamata-Viehweg vanishing theorem on a normal compact Kahler space X: if L is a nef line bundle with numerical dimension at least equal to 2, then the q-th cohomology g…
Envelope Solitons of Nonlinear Schrodinger Equation with an Anti-cubic Nonlinearity
R. Fedele, H. Schamel, V. I. Karpman +1
On the basis of a recently-proposed method to find solitary solutions of generalized nonlinear Schrodinger equations [1]-[3], the existence of an envelope solitonlike solutions of…
Symplectic structures of algebraic surfaces and deformation
Fabrizio Catanese
Friedman and Morgan made the "speculation" that deformation equivalence and diffeomorphism should coincide for algebraic surfaces. Counterexamples, for the hitherto open case of su…
Canonical projections of irregular algebraic surfaces
Fabrizio Catanese, Frank Olaf Schreyer
A good canonical projection of a surface of general type is a morphism to the 3-dimensional projective space P^3 given by 4 sections of the canonical line bundle. To such a pro…
Pattern forming instability induced by light in pure and dye-doped nematic liquid crystals
D. O. Krimer, G. Demeter, L. Kramer
We study theoretically the instabilities induced by a linearly polarized ordinary light wave incident at a small oblique angle on a thin layer of homeotropically oriented nematic l…
Statistical dynamical mean-field description of strongly correlated disordered electron-phonon systems
Franz X. Bronold, Holger Fehske
Combining the self-consistent theory of localization and the dynamical mean-field theory, we present a theoretical approach capable of describing both self-trapping of charge carri…
Superconducting properties of RuSr2GdCu2O8 studied by SQUID magnetometry
Thomas P. Papageorgiou, Hans F. Braun, Thomas Herrmannsdoerfer
For polycrystalline RuSr2GdCu2O8 (Ru-1212), distinct peaks have been reported in d.c. magnetization in the superconducting state of the sample. Sr2GdRuO6 (Sr-2116), the precursor f…
Magnetization anomalies in the superconducting state of RuSr2GdCu2O8 and the magnetic study of Sr2GdRuO6
Thomas P. Papageorgiou, Thomas Herrmannsdoerfer, Robert Dinnebier +4
d.c. magnetization measurements performed on a polycrystalline sample of RuSr2GdCu2O8 (Ru-1212) showed distinct peaks of the magnetization upon entering the superconducting state.…
Interplay of charge, spin, orbital and lattice correlations in colossal magnetoresistance manganites
Alexander Weisse, Holger Fehske
We derive a realistic microscopic model for doped colossal magnetoresistance manganites, which includes the dynamics of charge, spin, orbital and lattice degrees of freedom on a qu…
Nonlinear waves in a cylindrical Bose-Einstein condensate
S. Komineas, N. Papanicolaou
We present a complete calculation of solitary waves propagating in a steady state with constant velocity v along a cigar-shaped Bose-Einstein trap approximated as infinitely-long c…
Does ohmic heating influence the flow field in thin-layer electrodeposition?
Matthias Schröter, Klaus Kassner, Ingo Rehberg +2
In thin-layer electrodeposition the dissipated electrical energy leads to a substantial heating of the ion solution. We measured the resulting temperature field by means of an infr…
On future geodesic completeness for the Einstein-Vlasov system with hyperbolic symmetry
Gerhard Rein
Spacetimes with collisionless matter evolving from data on a compact Cauchy surface with hyperbolic symmetry are shown to be timelike and null geodesically complete in the expandin…
Stable Models of Elliptical Galaxies
Yan Guo, Gerhard Rein
We construct stable axially symmetric models of elliptical galaxies. The particle density on phase space for these models depends monotonically on the particle energy and on the th…
Retracting fronts induce spatio-temporal intermittency
Pierre Coullet, Lorenz Kramer
The intermittent route to spatio-temporal complexity is analyzed in a simple model which displays a subcritical bifurcation without hysteresis. A new type of spatio-temporal comple…
Thixotropy in macroscopic suspensions of spheres
C. Voeltz, M. Nitschke, L. Heymann +1
An experimental study of the viscosity of a macroscopic suspension, i.e. a suspension for which Brownian motion can be neglected, under steady shear is presented. The suspension is…
Vortex Rings and Lieb Modes in a Cylindrical Bose-Einstein Condensate
S. Komineas, N. Papanicolaou
We present a calculation of a solitary wave propagating along a cylindrical Bose-Einstein trap, which is found to be a hybrid of a one-dimensional (1D) soliton and a three-dimensio…
Strain dependence of the acoustic properties of amorphous metals below 1K: Evidence for the interaction between tunneling states
R. Koenig, M. A. Ramos, I. Usherov-Marshak +3
We have conducted a thorough study of the acoustic properties between 10^-4 and 1 Kelvin for the amorphous metal Zr_x Cu_1-x (x=0.3 and x=0.4), by measuring the relative change of…
Tsuji's Numerical Trivial Fibrations
Thomas Eckl
The Reduction Map Theorem in H. Tsuji's work on numerical trivial fibrations is corrected and proven. To this purpose various definitions of Tsuji's new intersection numbers for ps…
Thermal diffusion of supersonic solitons in an anharmonic chain of atoms
Edward Arevalo, Franz G. Mertens, Yuri Gaididei +1
We study the non-equilibrium diffusion dynamics of supersonic lattice solitons in a classical chain of atoms with nearest-neighbor interactions coupled to a heat bath. As a specifi…
Ground state and excitation of an asymmetric spin ladder model
Shu Chen, H. Büttner, J. Voit
We perform a systematic investigation of an asymmetric zig-zag spin ladder with inter-leg exchange and different exchange integrals on both legs. In the weak limi…