Geometry driven type II higher dimensional blow-up for the critical heat equation
Geometry driven type II higher dimensional blow-up for the critical heat equation
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DOI:
10.1016/j.jfa.2020.108788
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发表时间:
2017-10
影响因子:
1.7
通讯作者:
Manuel del Pino;M. Musso;Juncheng Wei
中科院分区:
文献类型:
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作者:
Manuel del Pino;M. Musso;Juncheng Wei
We consider the problem v t= Δ v+| v| p− 1 v in Ω×(0, T), v= 0 on∂ Ω×(0, T), v> 0 in Ω×(0, T). In a domain Ω⊂ R d, d≥ 7 enjoying special symmetries, we find the first example of a solution with type II blow-up for a power p less than the Joseph-Lundgren exponent p J L (d)={∞, if 3≤ d≤ 10, 1+ 4 d− 4− 2 d− 1, if d≥ 11. No type II radial blow-up is present for p< p J L (d). We take p= d+ 1 d− 3, the Sobolev critical exponent in one dimension less. The solution blows up on circle contained in a negatively curved part of the boundary in the form of a sharply scaled Aubin-Talenti bubble, approaching its energy density a Dirac measure for the curve. This is a completely new phenomenon for a diffusion setting.