2024-03-29T00:31:26Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/691762022-11-17T02:08:08Zhdl_2115_45007hdl_2115_116On the essential spectra of quantum field HamiltoniansArai, A.410We present a method to locate the essential spectrum of a self-adjoint operator on the tensor product of a Hilbert space and the abstract boson Fack space, and discuss its application to Hamiltonians of quantum field models.Department of Mathematics, Hokkaido UniversityDepartmental Bulletin Paperapplication/pdfhttp://hdl.handle.net/2115/69176info:doi/10.14943/83572https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/69176/1/pre426.pdfHokkaido University Preprint Series in Mathematics4261181998-09-01engpublisher