کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7374976 1480068 2018 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Role of short-range correlation in facilitation of wave propagation in a long-range ladder chain
ترجمه فارسی عنوان
نقش همبستگی کوتاه مدت در تسهیل پخش موج در یک زنجیره نردبان طولانی
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
چکیده انگلیسی
We extend a new method for generating a random chain, which has a kind of short-range correlation induced by a repeated sequence while retaining long-range correlation. Three distinct methods are considered to study the localization-delocalization transition of mechanical waves in one-dimensional disordered media with simultaneous existence of short and long-range correlation. First, a transfer-matrix method was used to calculate numerically the localization length of a wave in a binary chain. We found that the existence of short-range correlation in a long-range correlated chain can increase the localization length at the resonance frequency Ωc. Then, we carried out an analytical study of the delocalization properties of the waves in correlated disordered media around Ωc. Finally, we apply a dynamical method based on the direct numerical simulation of the wave equation to study the propagation of waves in the correlated chain. Imposing short-range correlation on the long-range background will lead the propagation to super-diffusive transport. The results obtained with all three methods are in agreement with each other.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 505, 1 September 2018, Pages 49-60
نویسندگان
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