4 problems
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The all-order Fermi golden rule formula for nonlinear Schrödinger equations
Fermi golden rule formula. The identity
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The general Fermi golden rule formula for nonlinear Schrödinger operators
General Fermi golden rule formula. The formula
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Discreteness conjecture for the fourth-order Fermi Golden Rule exceptional set
Discreteness conjecture. As in the case , is a discrete subset of .
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Soffer–Weinstein's weak-resonance Fermi golden rule conjecture
Consider a Hamiltonian nonlinear perturbation of the linear dispersive Klein–Gordon equation with a discrete eigenfrequency and continuous spectral threshold , in the w…