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5 papers · 2 filters
Scale separation in granular packings: stress plateaus and fluctuations
C. Goldenberg, A. P. F. Atman, P. Claudin +2
It is demonstrated, by numerical simulations of a 2D assembly of polydisperse disks, that there exists a range (plateau) of coarse graining scales for which the stress tensor field…
Functional-integral based perturbation theory for the Malthus-Verhulst process
Nicholas R. Moloney, Ronald Dickman
We apply a functional-integral formalism for Markovian birth and death processes to determine asymptotic corrections to mean-field theory in the Malthus-Verhulst process (MVP). Exp…
Driven lattice gas with nearest-neighbor exclusion: shear-like drive
Fabricio Q. Potiguar, Ronald Dickman
We present Monte Carlo simulations of the lattice gas with nearest-neighbor exclusion and Kawasaki (hopping) dynamics, under the influence of a nonuniform drive, on the square latt…
On the Truncation of Systems with Non-Summable Interactions
S. Friedli, B. N. B. de Lima
In this note we consider long range -states Potts models on , . For various families of non-summable ferromagnetic pair potentials , we show t…
Morphological transition between diffusion-limited and ballistic aggregation growth patterns
S. C. Ferreira, S. G. Alves, A. Faissal Brito +1
In this work, the transition between diffusion-limited and ballistic aggregation models was revisited using a model in which biased random walks simulate the particle trajectories.…