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Triviality of the Higgs field

Journal Article · · Int. J. Mod. Phys. A; (United States)
The authors give a critical review of the triviality of the /lambda/phi theory, i.e., the vanishing of the renormalized self-coupling. Evidence from perturbation theory and Monte-Carlo simulations are cited. It is noted that (a) the theory is trivial but not entirely free, for there is spontaneous symmetry breaking; (b) perturbation theory is unreliable. Soluble examples with similar behavior are compared, in particular the Lee model and the 3D /delta/function potential. The latter case is especially important, for it shows that triviality is a symptom that the interaction is too singular, and suggests a cure. The import for the Higgs sector of the standard model is discussed. It is argued that, like the Fermi pseudopotential, the Higgs field is a long-wavelength approximation that should be used in lowest order perturbation theory only.
Research Organization:
Massachusetts Inst. of Tech., Cambridge, MA (USA). Center for Theoretical Physics
OSTI ID:
5628143
Journal Information:
Int. J. Mod. Phys. A; (United States), Journal Name: Int. J. Mod. Phys. A; (United States) Vol. 4:5; ISSN IMPAE
Country of Publication:
United States
Language:
English