Scale invariance and gravitational coupling
β Scribed by S Deser
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 327 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0003-4916
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β¦ Synopsis
A variant of General Relativity provides a model in which scale invariance of matter is a consistency requirement on its coupling to gravitation. Invariance breaking is introduced by giving a finite (cosmological) range to one of the gravitational variables; the Einstein and cosmological constants are then approximately determined by the average mass-density of the universe.
π SIMILAR VOLUMES
The gravitational field equations of general relativity theory are cast into a Yang-Mills type of theory by use of the group X(2, C). The spin coefficients take the role of the Yang-Mills-like potentials, whereas the Riemann tensor takes the role of the fields. Comparison of this formalism with that
A gauge field theory of (local) scale invariance is constructed. When coupled to gravity it yields the old theory of Weyl. A Brans-Dicke scalar field is introduced & la Dbac. With a suitable choice of parameters the theory then reduces in a special gauge to Einstein's theory even in the presence of