Field theory as a tool to constrain new physics models

Abstract

One of the major problems in developing new physics scenarios is that very often the parameters can be adjusted such that in perturbation theory almost all experimental low-energy results can be accommodated. It is therefore desirable to have additional constraints. Field-theoretical considerations can provide such additional constraints on the low-lying spectrum and multiplicities of models. Especially for theories with elementary or composite Higgs particle the Fröhlich-Morchio-Strocchi mechanism provides a route to create additional conditions, though showing it to be at work requires genuine non-perturbative calculations. The qualitative features of this procedure are discussed for generic 2-Higgs-doublet models, grand-unified theories, and technicolor-type theories.

5 pages

References in corpus (4)

• Big-Bang Nucleosynthesis
• On the Ambiguity of Spontaneously Broken Gauge Symmetry
• Two- and three-point functions in Landau gauge Yang-Mills-Higgs theory
• Spontaneous symmetry breaking in a two-doublet lattice Higgs model

Cited by in corpus (17)

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• Impact of generalized Yukawa interactions on the lower Higgs mass bound
• On the observable spectrum of theories with a Brout-Englert-Higgs effect
• Predicting the singlet vector channel in a partially Higgsed gauge theory
• The spectrum of an SU(3) gauge theory with a fundamental Higgs field
• Analytical relations for the bound state spectrum of gauge theories with a Brout-Englert-Higgs mechanism
• Nonabelian Higgs models: paving the way for asymptotic freedom
• Gauge invariance and the physical spectrum in the two-Higgs-doublet model
• Exploratory study of the off-shell properties of the weak vector bosons
• Pair production processes and flavor in gauge-invariant perturbation theory
• A composite massless vector boson
• Constraining the Higgs valence contribution in the proton
• Testing the mechanism of lepton compositness
• Quantum field theories of relativistic Luttinger fermions
• Multiple breaking patterns in the Brout-Englert-Higgs effect beyond perturbation theory
• The manifestly gauge-invariant spectrum of the Minimal Supersymmetric Standard Model
• The Fröhlich-Morchio-Strocchi mechanism: A underestimated legacy