Abstract
The :Φ4: interaction for boson fields is considered in three dimensional space time. A space cutoff is included in the interaction term. The main result is that the renormalized HamiltonianH ren is a densely defined symmetric operator. In addition to the infinite vacuum energy and infinite mass renormalizations, this theory has an infinite wave function renormalization. Consequently the Hilbert space (of physical particles) in whichH ren acts is disjoint from the bare particle Fock Hilbert space in which the unrenormalized Hamiltonian is defined.
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This work was supported in part by the National Science Foundation, NSF GP 7477.
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Glimm, J. Boson fields with the :Φ4: Interaction in three dimensions. Commun.Math. Phys. 10, 1–47 (1968). https://doi.org/10.1007/BF01654131
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DOI: https://doi.org/10.1007/BF01654131