Hamiltonians with purely discrete spectrum
classification
🧮 math.FA
math-phmath.MPmath.SP
keywords
spectrumabeliancasecompactcriteriadiscretediscussempty
read the original abstract
We discuss criteria for a self-adjoint operator on L^2(X) to have empty essential spectrum. We state a general result for the case of a locally compact abelian group X and give examples for X=R^n.
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