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- Forschungszentrum JülichDE94 papers
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7 papers · 1 filter
Spontaneous Symmetry Breaking in Directed Percolation with Many Colors: Differentiation of Species in the Gribov Process
H. K. Janssen
A general field theoretic model of directed percolation with many colors that is equivalent to a population model (Gribov process) with many species near their extinction threshold…
Critical holes in undercooled wetting layers
G. Foltin, R. Bausch, R. Blossey
The profile of a critical hole in an undercooled wetting layer is determined by the saddle-point equation of a standard interface Hamiltonian supported by convenient boundary condi…
OT SIMPLE - a construction-kit approach to Optimality Theory implementation
Markus Walther
This paper details a simple approach to the implementation of Optimality Theory (OT, Prince and Smolensky 1993) on a computer, in part reusing standard system software. In a nutshe…
On Critical Exponents and the Renormalization of the Coupling Constant in Growth Models with Surface Diffusion
H. K. Janssen
It is shown by the method of renormalized field theory that in contrast to a statement based on a mathematically ill-defined invariance transformation and found in most of the rece…
Adaptive Mesh Refinement for Singular Current Sheets in Incompressible Magnetohydrodynamic Flows
Holger Friedel, Rainer Grauer, Christiane Marliani
The formation of current sheets in ideal incompressible magnetohydrodynamic flows in two dimensions is studied numerically using the technique of adaptive mesh refinement. The grow…
Renormalized field theory and particle density profile in driven diffusive systems with open boundaries
H. K. Janssen, K. Oerding
We investigate the density profile in a driven diffusive system caused by a plane particle source perpendicular to the driving force. Focussing on the case of critical bulk density…