Joachim Krieger

• Concentration Compactness for Critical Wave Maps
• Stability of Spherically Symmetric Wave Maps (Memoirs of the American Mathematical Society)
• Type II Blow up Solutions with Optimal Stability Properties for the Critical Focussing Nonlinear Wave Equation on $ Mathbb {R}^{3+1}$
• Vector Field Method on the Distorted Fourier Side and Decay for Wave Equations with Potentials