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Quadratic forms and Klauder's phenomenon: A remark on very singular perturbations |
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| Authors: | Barry Simon |
| Institution: | Départment de Physique à Luminy, Université d''Aix-Marseille II, Marseille, France |
| Abstract: | We give a general analysis of a class of pairs of positive self-adjoint operators A and B for which A + λB has a limit (in strong resolvent sense) as λ ↓ 0 which is an operator Ap ≠ A! |
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