Oscillating minimizers of a fourth order problem invariant under scaling

R. Benguria, I. Catto, J. Dolbeault +1

By variational methods, we prove the inequality: $$ \int_{\mathbb{R}} u''{}^2 dx-\int_{\mathbb{R}} u'' u^2 dx\geq I \int_{\mathbb{R}} u^4 dx\quad \forall u\in L^4({\mathbb{R}}) {su…