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arXiv · 0805.4501

Divide and conquer: resonance induced by competitive interactions

T. Vaz Martins·Raul Toral·M. A. Santos
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Abstract

We study an Ising model in a network with disorder induced by the presence of both attractive and repulsive links. This system is subjected to a subthreshold signal, and the goal is to see how the response is enhanced for a given fraction of repulsive links. This can model a network of spin-like neurons with excitatory and inhibitory couplings. By means of numerical simulations and analytical calculations we find that there is an optimal probability, such that the coherent response is maximal.

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T. Vaz Martins, Raul Toral, M. A. Santos. 2008-05-29. Divide and conquer: resonance induced by competitive interactions. https://doi.org/10.1140/epjb/e2008-00437-9

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