Thursday, July 25, 2013

1307.6428 (Biagio Cassano et al.)

Sharp Hardy uncertainty principle and gaussian profiles of covariant
Schrödinger evolutions

Biagio Cassano, Luca Fanelli
We prove a sharp version of the Hardy uncertainty principle for Schr\"odinger equations with external bounded electromagnetic potentials, based on logarithmic convexity properties of Schr\"odinger evolutions. We provide, in addition, an example of a real electromagnetic potential which produces the existence of solutions with critical gaussian decay, at two distinct times.
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