1.5k 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 ScientifiqueFR104 papers
- Institute for Chemistry and Biology of the Marine EnvironmentDE47 papers
- Hearing4allDE46 papers
- University of BremenDE45 papers
- Universidad Complutense de MadridES43 papers
- Université Paris-SudFR42 papers
- University of WürzburgDE42 papers
- Laboratoire Charles FabryFR37 papers
- Université Paris-SaclayFR36 papers
- University of AveiroPT34 papers
- Humboldt-Universität zu BerlinDE30 papers
- National Academy of Sciences of the Republic of KyrgyzstanKG28 papers
21 papers · 1 filter
Gravitating Monopole--Antimonopole Chains and Vortex Rings
Burkhard Kleihaus, Jutta Kunz, Yasha Shnir
We construct monopole-antimonopole chain and vortex solutions in Yang-Mills-Higgs theory coupled to Einstein gravity. The solutions are static, axially symmetric and asymptotically…
Runtime Reconfiguration of J2EE Applications
Jasminka Matevska-Meyer, Sascha Olliges, Wilhelm Hasselbring
Runtime reconfiguration considered as "applying required changes to a running system" plays an important role for providing high availability not only of safety- and mission-critic…
Noiseless limit of a ferrofluid ratchet
Volker Becker, Andreas Engel
The noiseless limit of a thermal ratchet device using ferrofluids is studied in detail. Contrary to previous claims it is proved that no directed transport can occur in this model…
Platonic Sphalerons in the Presence of a Dilaton Field
Burkhard Kleihaus, Jutta Kunz, Kari Myklevoll
We construct sphaleron solutions with discrete symmetries in Yang-Mills-Higgs theory coupled to a dilaton. Related to rational maps of degree N, these platonic sphalerons can be as…
New Regular Solutions with Axial Symmetry in Einstein-Yang-Mills Theory
Rustam Ibadov, Burkhard Kleihaus, Jutta Kunz +1
We construct new regular solutions in Einstein-Yang-Mills theory. They are static, axially symmetric and asymptotically flat. They are characterized by a pair of integers (k,n), wh…
Periodic Field Emission from an Isolated Nano-Scale Electron Island
D. V. Scheible, C. Weiss, J. P. Kotthaus +1
We observe field emission from an isolated nano-machined gold island. The island is able to mechanically oscillate between two facing electrodes, which provide recharging and detec…
Ground-state energy and depletions for a dilute binary Bose gas
Andre Eckardt, Christoph Weiss, Martin Holthaus
When calculating the ground-state energy of a weakly interacting Bose gas with the help of the customary contact pseudopotential, one meets an artifical ultraviolet divergence whic…
Ground state energy of a homogeneous Bose-Einstein condensate beyond Bogoliubov
Christoph Weiss, Andre Eckardt
The standard calculations of the ground-state energy of a homogeneous Bose gas rely on approximations which are physically reasonable but difficult to control. Lieb and Yngvason [P…
Bogoliubov speed of sound for a dilute Bose-Einstein condensate in a 3d optical lattice
Dave Boers, Christoph Weiss, Martin Holthaus
We point out that the velocity of propagation of sound wavepackets in a Bose-Einstein condensate filling a three-dimensional cubic optical lattice undergoes a maximum with increasi…
Axially symmetric SU(3) Gravitating Skyrmions
Theodora Ioannidou, Burkhard Kleihaus, Wojtek Zakrzewski
Axially symmetric gravitating multi-skyrmion configurations are obtained using the harmonic map ansatz introduced in [1]. In particular, the effect of gravity on the energy and bar…
Rotating Black Holes with Monopole Hair
B. Kleihaus, J. Kunz, F. Navarro-Lerida
We study rotating black holes in Einstein-Yang-Mills-Higgs theory. These black holes emerge from static black holes with monopole hair when a finite horizon angular velocity is imp…
An Improved Harmonic Map Ansatz
Theodora Ioannidou, Burkhard Kleihaus, Wojtek Zakrzewski
The rational map ansatz of Houghton et al \cite{HMS} is generalised by allowing the profile function, usually a function of , to depend also on and . It is shown th…
Monopole-Antimonopole Chains and Vortex Rings
Burkhard Kleihaus, Jutta Kunz, Yasha Shnir
We consider static axially symmetric solutions of SU(2) Yang-Mills-Higgs theory. The simplest such solutions represent monopoles, multimonopoles and monopole-antimonopole pairs. In…
Thermal ratchet effects in ferrofluids
Andreas Engel, Peter Reimann
Rotational Brownian motion of colloidal magnetic particles in ferrofluids under the influence of an oscillating external magnetic field is investigated. It is shown that for a suit…
Passive scalar diffusion as a damped wave
Axel Brandenburg, Petri Käpylä, Amjed Mohammed
Three-dimensional turbulence simulations are used to show that the turbulent root mean square velocity is an upper bound of the speed of turbulent diffusion. There is a close analo…
Increment definitions for scale dependent analysis of stochastic data
Matthias Waechter, Alexei Kouzmitchev, Joachim Peinke
It is common for scale-dependent analysis of stochastic data to use the increment of a data set as a stochastic measure, where denotes the scale…
Stochastic analysis of different rough surfaces
M. Waechter, F. Riess, Th. Schimmel +2
This paper shows in detail the application of a new stochastic approach for the characterization of surface height profiles, which is based on the theory of Markov processes. With…
Yakhot's model of strong turbulence: A generalization of scaling models of turbulence
Ch. Renner, J. Peinke
We report on some implications of the theory of turbulence developed by V. Yakhot [V. Yakhot, Phys. Rev. E {\bf 57}(2) (1998)]. In particular we focus on the expression for the sca…
Factorising numbers with a Bose-Einstein condensate
Christoph Weiss, Steffen Page, Martin Holthaus
The problem to express a natural number N as a product of natural numbers without regard to order corresponds to a thermally isolated non-interacting Bose gas in a one-dimensional…
Multimonopoles and closed vortices in SU(2) Yang-Mills-Higgs theory
Yasha Shnir
We review classical monopole solutions of the SU(2) Yang-Mills-Higgs theory. The first part is a pedagogical introduction into to the basic features of the celebrated 't Hooft - Po…
Interaction of Vortices with an External Field
Yasha Shnir
The interaction of a magnetic flux vortex with weak external fields is considered in the framework of the Abelian Higgs model. The approach is based on the calculation of the zero-…