Report
Nonlocal gap solitons in PT-symmetric periodic potentials with defocusing nonlinearity
| العنوان: | Nonlocal gap solitons in PT-symmetric periodic potentials with defocusing nonlinearity |
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| المؤلفون: | Jisha, Chandroth P., Alberucci, Alessandro, Brazhnyi, Valeriy A., Assanto, Gaetano |
| المصدر: | Phys. Rev. A 89, 013812 (2014) |
| سنة النشر: | 2018 |
| المجموعة: | Nonlinear Sciences |
| مصطلحات موضوعية: | Nonlinear Sciences - Pattern Formation and Solitons |
| الوصف: | Existence and stability of PT-symmetric gap solitons in a periodic structure with defocusing nonlocal nonlinearity are studied both theoretically and numerically. We find that, for any degree of nonlocality, gap solitons are always unstable in the presence of an imaginary potential. The instability manifests itself as a lateral drift of solitons due to an unbalanced particle flux. We also demonstrate that the perturbation growth rate is proportional to the amount of gain (loss), thus predicting the observability of stable gap solitons for small imaginary potentials. Comment: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.89.013812 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevA.89.013812 |
| URL الوصول: | http://arxiv.org/abs/1811.02460 |
| رقم الانضمام: | edsarx.1811.02460 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevA.89.013812 |
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