NLS blowup: Difference between revisions

From DispersiveWiki
Jump to navigationJump to search
No edit summary
No edit summary
Line 5: Line 5:
<center><math>\partial^2_t \int x^2 |u|^2 dx \leq H(u)</math>;</center>
<center><math>\partial^2_t \int x^2 |u|^2 dx \leq H(u)</math>;</center>


see e.g. [[OgTs1991]]. By scaling this implies that we have instantaneous blowup in <math>H^s\,</math> for <math>s < s_c\,</math> in the focusing case. In the defocusing case blowup <br /> is not known, but the <math>H^s\,</math> norm can still get arbitrarily large arbitrarily quickly for <math>s < s_c\,</math> [[CtCoTa-p2]]. In addition, the work about sharp criteria of blowup, see Zhj2002a, Zhj2002b.  
see e.g. [[OgTs1991]]. By scaling this implies that we have instantaneous blowup in <math>H^s\,</math> for <math>s < s_c\,</math> in the focusing case. In the defocusing case blowup <br /> is not known, but the <math>H^s\,</math> norm can still get arbitrarily large arbitrarily quickly for <math>s < s_c\,</math> [[CtCoTa-p2]]. In addition, the work about sharp criteria of blowup, see [[Zhj2002a]], [[Zhj2002b]].  






[[Category:Schrodinger]]
[[Category:Schrodinger]]

Revision as of 13:23, 21 March 2007



In the -supercritical focussing NLS one has blowup whenever the Hamiltonian is negative, thanks to Glassey's virial inequality

;

see e.g. OgTs1991. By scaling this implies that we have instantaneous blowup in for in the focusing case. In the defocusing case blowup
is not known, but the norm can still get arbitrarily large arbitrarily quickly for CtCoTa-p2. In addition, the work about sharp criteria of blowup, see Zhj2002a, Zhj2002b.