Weyl gauging and spontaneously broken Lorentz symmetry: Some alternative models

Details Weyl gauging and spontaneously broken Lorentz symmetry: Some alternative models Weyl gauging and spontaneously broken Lorentz symmetry: Some alternative models

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990gregr..22..217b&link_type=abstract

General Relativity and Gravitation, Volume 22, Issue 2, pp.217-231

Computer Science

3

Scientific paper

Some new effective actions are suggested for theories in which the affine connection is not completely specified by the metric. The new actions lead to models in which the metric, torsion, and Weyl vector fields all propagate. The dimensionally reduced versions do not contain third derivatives of the gauge potentials in the field equation. Some simple models which exhibit simultaneous breaking of Weyl andD-dimensional Lorentz symmetry are investigated. It is shown that it is possible for this effect to occur in any model in which the field action contains the Einstein-Hilbert term. This is due to the fact that the contortion occurs in this object as part of an indefinite quadratic form.

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