In reply to some observations by Brans the authors comment on the notion of 'physical metric' in the framework of equivalent metric theories of gravitation. They add some relevant remarks on the very concept of dynamical equivalence.
Remarks on the physical metric in non-linear theories of gravitation
FERRARIS, Marco;FRANCAVIGLIA, Mauro;MAGNANO, Guido
1990-01-01
Abstract
In reply to some observations by Brans the authors comment on the notion of 'physical metric' in the framework of equivalent metric theories of gravitation. They add some relevant remarks on the very concept of dynamical equivalence.
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