期刊
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
卷 47, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1751-8113/47/8/085204
关键词
nonlinear waves; anti-continuum limit; parity-time symmetry
资金
- NSERC Discovery grant
- FCT (Portugal) [PTDC/FIS-OPT/1918/2012, PEst-OE/FIS/UI0618/2011]
- Fundação para a Ciência e a Tecnologia [PTDC/FIS-OPT/1918/2012] Funding Source: FCT
We generalize a finite parity-time (PT)-symmetric network of the discrete nonlinear Schrodinger type and obtain general results on linear stability of the zero equilibrium, on the nonlinear dynamics of the dimer model, as well as on the existence and stability of large-amplitude stationary nonlinear modes. A result of particular importance and novelty is the classification of all possible stationary modes in the limit of large amplitudes. We also discover a new integrable configuration of a PT-symmetric dimer.
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