Abstract
We prove Hunziker's theorem that the essential spectrum of the internal Hamiltonian of anN-particle system is bounded below by the lowest 2-particle threshold. Our assumptions are given in terms of the Hamiltonian alone without reference to potentials. They include the previously treated cases.
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Communicated by W. Hunziker
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Enss, V. A note on Hunziker's theorem. Commun.Math. Phys. 52, 233–238 (1977). https://doi.org/10.1007/BF01609484
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DOI: https://doi.org/10.1007/BF01609484