Blow up dynamics for smooth data equivariant solutions to the energy critical Schrodinger map problem

Details Blow up dynamics for smooth data equivariant solutions to the energy critical Schrodinger map problem Blow up dynamics for smooth data equivariant solutions to the energy critical Schrodinger map problem

2011-02-21

arxiv.org/abs/1102.4308v2

Mathematics

Analysis of PDEs

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Scientific paper

We consider the energy critical Schrodinger map to the 2-sphere for equivariant initial data of homotopy number k=1. We show the existence of a set of smooth initial data arbitrarily close to the ground state harmonic map in the scale invariant norm which generates finite time blow up solutions. We give a sharp description of the corresponding singularity formation which occurs by concentration of a universal bubble of energy. The concentration rate is given by $$\lambda(t)=\kappa(u)\frac{T-t}{|\log (T-t)|^2}(1+o(1))$$ for some $\kappa(u)>0$. The detailed proofs of the results will appear in a companion paper.

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