کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8899746 1631549 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Essential spectrum of a periodic waveguide with non-periodic perturbation
ترجمه فارسی عنوان
طیف ضروری موجبر دوره ای با اختلال غیر دوره ای
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات آنالیز ریاضی
چکیده انگلیسی
We consider the spectral Dirichlet-Laplacian problem on a domain which is formed from a periodic waveguide Π perturbed by non-compact, non-periodic changes of geometry. We show that the domain perturbation causes an addition to the essential spectrum, which consists of isolated points belonging to the discrete spectrum of a model problem. This model problem is posed on a domain, which is just a compact perturbation of Π. We discuss the position of the new spectral components in relation to the essential spectrum of the problem in Π.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Mathematical Analysis and Applications - Volume 463, Issue 2, 15 July 2018, Pages 922-933
نویسندگان
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