Journal
EUROPHYSICS LETTERS
Volume 75, Issue 2, Pages 349-354Publisher
EDP SCIENCES S A
DOI: 10.1209/epl/i2006-10100-3
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In this letter, we show that intermittent search strategies, alternating active search phases and non-reactive displacement phases, are universal for a wide class of problems involving search time optimization. More precisely, we address the general question of determining in which cases a searcher should, or should not, interrupt his search activity by losing time in non-reactive phases of mere displacement, and which durations of each phase optimize the search time. Using a representative analytical model, we show that intermittent strategies do optimize the search time as soon as the target is difficult to detect, and we explicitly give the optimal search strategies, which depend on the memory skills of the searcher.
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