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Optimal cooperative searching using purely repulsive interactions.

Noriyuki P Tani1, Alan Blatt1, David A Quint1

  • 1Department of Physics, University of California Merced, United States.

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Summary
This summary is machine-generated.

Collective foraging using simple repulsive signals can optimize search time. Even basic communication between diffusing searchers significantly reduces the time to reach a target, enhancing survival strategies.

Keywords:
Collective behaviorForaging

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Area of Science:

  • Statistical physics
  • Collective behavior
  • Biophysics

Background:

  • Foraging is essential for survival and can be optimized through communication.
  • Communication in foraging ranges from complex animal strategies to simple unicellular signals.

Purpose of the Study:

  • To systematically investigate the simplest form of communication: long-range repulsive interactions.
  • To determine how these interactions affect the efficiency of collective foraging in a simplified model.

Main Methods:

  • Simulating multiple diffusing Brownian searchers on a one-dimensional lattice.
  • Analyzing the mean first passage time to a fixed target under varying repulsive interaction ranges.

Main Results:

  • The mean first passage time exhibits non-monotonic dependence on the interaction range.
  • Optimal search time is achieved when the repulsive range is comparable to the average searcher spacing.

Conclusions:

  • Rudimentary collective searching, even via simple repulsion, lowers search time.
  • This suggests robust mechanisms for search optimization exist in cellular communities.