PT-Symmetric Oligomers: Analytical Solutions, Linear Stability and Nonlinear Dynamics

Details PT-Symmetric Oligomers: Analytical Solutions, Linear Stability and Nonlinear Dynamics PT-Symmetric Oligomers: Analytical Solutions, Linear Stability and Nonlinear Dynamics

2011-02-03

arxiv.org/abs/1102.0809v1

Nonlinear Sciences

Pattern Formation and Solitons

6 pages, 9 figures

Scientific paper

In the present work we focus on the case of (few-site) configurations respecting the PT-symmetry. We examine the case of such "oligomers" with not only 2-sites, as in earlier works, but also the cases of 3- and 4-sites. While in the former case of recent experimental interest, the picture of existing stationary solutions and their stability is fairly straightforward, the latter cases reveal a considerable additional complexity of solutions, including ones that exist past the linear PT-breaking point in the case of the trimer, and more complex, even asymmetric solutions in the case of the quadrimer with nontrivial spectral and dynamical properties. Both the linear stability and the nonlinear dynamical properties of the obtained solutions are discussed.

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