Scalar concomitants of a metric and a curvature form.
Abstract
In an Einstein-Yang-Mills field theory the field equations can be obtained by applying a variational principle to a Langrangian minimally coupled to a Lagrangian concomitant of a curvature form and the metric tensor. As a step in the discussion of the uniqueness of these equations, we find the general form of such a Lagrangian.
- Publication:
-
General Relativity and Gravitation
- Pub Date:
- April 1988
- DOI:
- 10.1007/BF00758958
- Bibcode:
- 1988GReGr..20..337N
- Keywords:
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- General Relativity