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A modified Fermi Golden Rule at threshold for 3D magnetic Schrödinger operators

Exner, Pavel et al.
arXiv (All) · Papers
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mathematical-physicsspectral-theory
In this paper we consider three-dimensional Schrödinger operators with a simple threshold eigenvalue. We show, under certain assumptions, that when a small magnetic field is introduced, this eigenvalue turns into a resonance in the time-dependent sense. We find the leading term in the asymptotic exp
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