Nonlinear delocalization on disordered Stark ladder

Details Nonlinear delocalization on disordered Stark ladder Nonlinear delocalization on disordered Stark ladder

2009-03-12

arxiv.org/abs/0903.2103v1

Eur. Phys. J. B 71, 121-124 (2009)

Physics

Condensed Matter

Disordered Systems and Neural Networks

Research found at http://www.quantware.ups-tlse.fr/

Scientific paper

10.1140/epjb/e2009-00265-5

We study effects of weak nonlineary on localization of waves in disordered
Stark ladder corresponding to propagation in presence of disorder and a static
field. Our numerical results show that nonlinearity leads to delocalization
with subdiffusive spreading along the ladder. The exponent of spreading remains
close to its value in absence of the static field.

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