PIRSA:19030099

Video URL

https://pirsa.org/19030099

Assessment of the particle standard model: An alternative formulation.

Moffat, J. (2019). Assessment of the particle standard model: An alternative formulation.. Perimeter Institute for Theoretical Physics. https://pirsa.org/19030099

Moffat, John. Assessment of the particle standard model: An alternative formulation.. Perimeter Institute for Theoretical Physics, Mar. 04, 2019, https://pirsa.org/19030099 

          @misc{ scivideos_PIRSA:19030099,
            doi = {10.48660/19030099},
            url = {https://pirsa.org/19030099},
            author = {Moffat, John},
            keywords = {Quantum Fields and Strings, Quantum Gravity},
            language = {en},
            title = {Assessment of the particle standard model: An alternative formulation.},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2019},
            month = {mar},
            note = {PIRSA:19030099 see, \url{https://scivideos.org/pirsa/19030099}}
          }

John Moffat Perimeter Institute for Theoretical Physics

Talk numberPIRSA:19030099
DOI10.48660/19030099
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

An assessment of the particle standard model and an alternative formulation of
the model are presented. An ultraviolet complete particle model is constructed
for the observed particles of the standard model. The quantum field theory
associates infinite derivative entire functions with propagators and vertices, which
make perturbative quantum loops finite and maintain Poincaré invariance and
unitarity of the model. The electroweak model SU(2) X U(1) group is treated as a
broken symmetry group with non-vanishing experimentally determined boson
and fermion masses. A spontaneous symmetry breaking of the vacuum by a
scalar Higgs field is not invoked to restore boson and fermion masses to the
initially massless SU(2) X U(1) Lagrangian of the standard model. The hierarchy
naturalness problem of the Higgs boson mass is resolved and the model
contains only experimentally observed masses and coupling constants. The
renormalization group features of the scalar Higgs field are investigated and the
model is shown to be asymptotically safe and free from the triviality problem. It is
demonstrated that the finite nonlocal quantum field theory satisfies
microcausality. The model can predict a stable vacuum evolution. Experimental
tests to distinguish the standard model from the alternative model are proposed.
The finite quantum field theory can be extended to quantum gravity.