Gravity/gaugefield/Higgs unification bid by Lisi-Smolin-Speziale

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SUMMARY

The discussion centers on the paper titled "Unification of gravity, gauge fields, and Higgs bosons" by A. Garrett Lisi, Lee Smolin, and Simone Speziale, submitted on April 27, 2010. The authors propose a diffeomorphism invariant theory that integrates a gauge field valued in a Lie algebra, which spontaneously breaks into the Lorentz algebra and a Yang-Mills algebra. The framework begins with a fully gauge invariant action, extending the Plebanski action for general relativity, ultimately recovering the actions for gravity, Yang-Mills, and Higgs fields. The low-energy coupling constants derived from this theory depend on a single parameter and the vacuum expectation value of the Higgs.

PREREQUISITES
  • Understanding of diffeomorphism invariance in theoretical physics
  • Familiarity with Lie algebras and gauge fields
  • Knowledge of the Plebanski action in general relativity
  • Concepts of symmetry breaking and vacuum expectation values in quantum field theory
NEXT STEPS
  • Research the implications of diffeomorphism invariance in modern physics
  • Study the Plebanski action and its applications in general relativity
  • Explore the role of Yang-Mills theories in particle physics
  • Investigate the mechanisms of symmetry breaking in quantum field theories
USEFUL FOR

The discussion is beneficial for theoretical physicists, researchers in quantum field theory, and anyone interested in the unification of fundamental forces, particularly those exploring the intersections of gravity, gauge fields, and Higgs bosons.

marcus
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http://arxiv.org/abs/1004.4866
Unification of gravity, gauge fields, and Higgs bosons
A. Garrett Lisi, Lee Smolin, Simone Speziale
12 pages
(Submitted on 27 Apr 2010)
"We consider a diffeomorphism invariant theory of a gauge field valued in a Lie algebra that breaks spontaneously to the direct sum of the spacetime Lorentz algebra, a Yang-Mills algebra, and their complement. Beginning with a fully gauge invariant action -- an extension of the Plebanski action for general relativity -- we recover the action for gravity, Yang-Mills, and Higgs fields. The low-energy coupling constants, obtained after symmetry breaking, are all functions of the single parameter present in the initial action and the vacuum expectation value of the Higgs."

EDIT: I now see that MTd2 flagged this new paper one minute earlier than I did. So as far as I am concerned this post can be deleted or merged into the thread which MTd2 started.
 
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