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- Tel Aviv UniversityIL181 papers
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11 papers · 2 filters
Worm-like Polymer Loops and Fourier Knots
S. Rappaport, Y. Rabin, A. Yu. Grosberg
Every smooth closed curve can be represented by a suitable Fourier sum. We show that the ensemble of curves generated by randomly chosen Fourier coefficients with amplitudes invers…
Front Propagation up a Reaction Rate Gradient
Elisheva Cohen, David A. Kessler, Herbert Levine
We expand on a previous study of fronts in finite particle number reaction-diffusion systems in the presence of a reaction rate gradient in the direction of the front motion. We st…
Front Propagation Dynamics with Exponentially-Distributed Hopping
Elisheva Cohen, David A. Kessler
We study reaction-diffusion systems where diffusion is by jumps whose sizes are distributed exponentially. We first study the Fisher-like problem of propagation of a front into an…
Optimization of Network Robustness to Random Breakdowns
Gerald Paul, Sameet Sreenivasan, Shlomo Havlin +1
We study network configurations that provide optimal robustness to random breakdowns for networks with a given number of nodes and a given cost--which we take as the average nu…
A Random Walk to a Non-Ergodic Equilibrium Concept
Golan Bel, Eli Barkai
Random walk models, such as the trap model, continuous time random walks, and comb models exhibit weak ergodicity breaking, when the average waiting time is infinite. The open ques…
Equation-free Dynamic Renormalization of a KPZ-type Equation
David A. Kessler, Ioannis G. Kevrekidis, Ligang Chen
In the context of equation-free computation, we devise and implement a procedure for using short-time direct simulations of a KPZ type equation to calculate the self-similar soluti…