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Localization decay induced by strong nonlinearity in disordered systems

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URI: http://hdl.handle.net/10016/15036
ISSN: 0031-9007 (print version)
ISSN: 1079-7114 (online version)
DOI: 10.1103/PhysRevLett.64.1693
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localization_PRL_1990.pdf (458.1 KB)
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1990-04-09
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American Physical Society
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The scattering of a non linear wave packet as an envelope soli ton by a one-dimensional disordered system is studied. It is well known that in the linear limit the transmission coefficient decays exponentially with a characteristic localization length. We predict, using a simple independent scattering approach and soliton perturbation theory in the framework of the non linear Schrodinger equation, that strong nonlinearity above a certain threshold allows undistorted propagation of wave packets.
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Physical Review Letters, vol. 64, n. 15, 9 april 1990. Pp. 1693-1696
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