355 citations · 2.6k across the 109 of their papers we have counts for
6 papers · 1 filter
Need, Greed and Noise: Competing Strategies in a Trading Model
R. Donangelo, A. Hansen, K. Sneppen +1
We study an economic model where agents trade a variety of products by using one of three competing rules: "need", "greed" and "noise". We find that the optimal strategy for any ag…
Failure properties of loaded fiber bundles having a lower cutoff in fiber threshold distribution
Srutarshi Pradhan, Alex Hansen
Presence of lower cutoff in fiber threshold distribution may affect the failure properties of a bundle of fibers subjected to external load. We investigate this possibility both in…
Crossover behavior in a mixed mode fiber bundle model
Srutarshi Pradhan, Bikas K. Chakrabarti, Alex Hansen
We introduce a mixed-mode load sharing scheme in fiber bundle model. This model reduces exactly to equal load sharing (ELS) and local load sharing (LLS) models at the two extreme c…
Mean Field Theory of Localization in the Fuse Model
Renaud Toussaint, Alex Hansen
We propose a mean field theory for the localization of damage in a quasistatic fuse model on a cylinder. Depending on the quenched disorder distribution of the fuse thresholds, we…
Phase Diagram of Optimal Paths
Alex Hansen, Janos Kertesz
We show that choosing appropriate distributions of the randomness, the search for optimal paths links diverse problems of disordered media like directed percolation, invasion perco…
Reply to Comment on "Roughness of Interfacial Crack Fronts: Stress-Weighted Percolation in the Damage Zone"
Jean Schmittbuhl, Alex Hansen, G. George Batrouni
This is the reply to a Comment by Alava and Zapperi (cond-mat/0401568) on Schmittbuhl, Hansen and Batrouni, PRL, 90, 045505 (2003).