Basu Thakur, R., L.Q. English, and A.J. Sievers. Driven Intrinsic Localized Modes in a Coupled Pendulum Array. Journal of Physics D: Applied Physics 41, no. 1 (2007): e015503. http://iopscience.iop.org/article/10.1088/0022-3727/41/1/015503

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Intrinsic localized modes (ILMs), also called discrete breathers, are directly generated via modulational instability in an array of coupled pendulums. These ILMs can be stabilized over a range of driver frequencies and amplitudes. They are characterized by a π-phase difference between their centre and wings. At higher driver frequencies, these ILMs are observed to disintegrate via a pulsating instability, and the mechanism of this breather instability is investigated.

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