کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1890647 1043832 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlinear operations on distributions and application to cosmology of very early universe
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک آماری و غیرخطی
پیش نمایش صفحه اول مقاله
Nonlinear operations on distributions and application to cosmology of very early universe
چکیده انگلیسی

In classical theory of distributions (Schwartz–Sobolov theory), nonlinear operations such as multiplication of distributions are forbidden (Schwartz impossibility theorem). Colombeau’s theory of new generalized functions provides a consistent framework to perform such operations. In this paper, using Colombeau algebra, we construct a signature changing cosmological model for beginning of the universe. Our model considers two different manifolds with a common signature changing boundary in which creation of the universe occurs as a quantum mechanical tunneling effect at this boundary. As an important result, we find a geometric interpretation of cosmological constant.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chaos, Solitons & Fractals - Volume 30, Issue 2, October 2006, Pages 290–299
نویسندگان
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