کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1866643 1038030 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the origin of heavy-tail statistics in equations of the Nonlinear Schrödinger type
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
On the origin of heavy-tail statistics in equations of the Nonlinear Schrödinger type
چکیده انگلیسی

We study the formation of extreme events in incoherent systems described by the Nonlinear Schrödinger type of equations. We consider an exact identity that relates the evolution of the normalized fourth-order moment of the probability density function of the wave envelope to the rate of change of the width of the Fourier spectrum of the wave field. We show that, given an initial condition characterized by some distribution of the wave envelope, an increase of the spectral bandwidth in the focusing/defocusing regime leads to an increase/decrease of the probability of formation of rogue waves. Extensive numerical simulations in 1D+1 and 2D+1 are also performed to confirm the results.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 380, Issue 39, 16 September 2016, Pages 3173–3177
نویسندگان
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