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math.AP2025
A limsup fast dynamo on
Massimo Sorella, David Villringer
We construct a time-dependent, incompressible, and uniformly-in-time Lipschitz continuous velocity field on that produces exponential growth of the magnetic energy a…
math.AP2025
Trace and Observability Inequalities for Laplace Eigenfunctions on the Torus
Nicolas Burq, Pierre Germain, Massimo Sorella +1
We investigate trace and observability inequalities for Laplace eigenfunctions on the d-dimensional torus, with respect to arbitrary Borel measures . Specifically, we characteri…
math.AP2025
Alpha-unstable flows and the fast dynamo problem
Michele Coti Zelati, Massimo Sorella, David Villringer
We construct a time-independent, incompressible, and Lipschitz-continuous velocity field in that generates a fast kinematic dynamo - an instability characterized by…