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math.AP2026
Slow dispersion in Floquet-Dirac Hamiltonians
Anthony Bloch, Amir Sagiv, Stefan Steinerberger
We study dispersive decay for non-autonomous Hamiltonian systems. While the general theory for dispersion in such non-autonomous systems is largely open, it was shown \cite{kraisle…
math.AP2025
Dirichlet eigenfunctions with nonzero mean value
Stefan Steinerberger, Raghavendra Venkatraman
We consider Laplacian eigenfunctions on a domain . Under Neumann boundary conditions, the first eigenfunction is constant and the others have mean value 0.…