Variational principles and gauge theories of gravitation
- 1 February 1977
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 10 (2) , 181-184
- https://doi.org/10.1088/0305-4470/10/2/006
Abstract
Attention is drawn to difficulties associated with gravitational theories based on Lagrangians formed from quadratic invariants of the Riemann tensor, and in particular with the Palatini variational method used by Yang in a gauge theory of gravitation. It is pointed out that the Yang theory is not mathematically well founded.Keywords
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