Intermittent search strategies

Optimal Intermittent Search Strategies: Smelling a Prey

Lévy strategies in intermittent search processes are advantageous

Intermittent search processes switch between local Brownian search events and ballistic relocation phases. We demonstrate analytically and numerically in one dimension that when relocation times are Lévy distributed, resulting in a Lévy walk dynamics, the search process significantly outperforms the previously investigated case of exponentially distributed relocation times: The resulting Lévy w...

Robustness of optimal intermittent search strategies in one, two, and three dimensions.

Search problems at various scales involve a searcher, be it a molecule before reaction or a foraging animal, which performs an intermittent motion. Here we analyze a generic model based on such type of intermittent motion, in which the searcher alternates phases of slow motion allowing detection and phases of fast motion without detection. We present full and systematic results for different mo...

Two-dimensional intermittent search processes: An alternative to Lévy flight strategies.

Lévy flights are known to be optimal search strategies in the particular case of revisitable targets. In the relevant situation of nonrevisitable targets, we propose an alternative model of two-dimensional (2D) search processes, which explicitly relies on the widely observed intermittent behavior of foraging animals. We show analytically that intermittent strategies can minimize the search time...

Intermittent search strategies revisited: effect of the jump length and biased motion

F. Rojo, J. Revelli, C. E. Budde, H. S. Wio, G. Oshanin, and K. Lindenberg Fa.M.A.F., Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina Instituto de F́ısica de Cantabria, Universidad de Cantabria and CSIC E-39005 Santander, Spain Laboratoire de Physique Thèorique de la Matière Condensée, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris Cedex 5 Franc...