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Published March 1986 | public
Journal Article

Supergravity and Superstrings

Abstract

Over the last decade, theorists have been searching hard for a unified quantum field theory of physical interactions with or without gravitation. The "standard" SU_3 x SU_2 x U_1 theory has three independent coupling constants and numerous dimensionless parameters determining the mass ratios, the weak coupling matrix, etc. The number of sets of Higgs bosons and the representation to which they belong appear arbitrary. The theory cries out to be embedded in a bigger and more nearly unified theory. The fact that the coupling constants appear to come together somewhere between 10^(15) GeV and the Planck mass of ~ 2 x 10^(19) GeV suggests a unified Yang-Mills theory, for example with SU5 and three fermion families (fermions in 5 + 10). However, such a theory, with one coupling constant, still has numerous dimensionless parameters and arbitrary Higgs boson behavior

Additional Information

© 1986 John Wiley & Sons, Inc.

Additional details

Created:
August 19, 2023
Modified:
October 24, 2023