کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1138829 1489195 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Asymptotic decay for the solutions of the parabolic–parabolic Keller–Segel chemotaxis system in critical spaces
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Asymptotic decay for the solutions of the parabolic–parabolic Keller–Segel chemotaxis system in critical spaces
چکیده انگلیسی

We consider the classical parabolic–parabolic Keller–Segel system describing chemotaxis, i.e., when both the evolution of the biological population and the chemoattractant concentration are described by a parabolic equation. We prove that when the equation is set in the whole space RdRd and dimension d≥3d≥3 the critical spaces for the initial bacteria density and the chemical gradient are respectively La(Rd)La(Rd), a>d/2a>d/2, and Ld(Rd)Ld(Rd). For in these spaces, we prove that small initial data give rise to global solutions that vanish as the heat equation for large times and that exhibit a regularizing effect of hypercontractivity type.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mathematical and Computer Modelling - Volume 47, Issues 7–8, April 2008, Pages 755–764
نویسندگان
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