Equivalence among frames in extended gravity
S.Capozziello, L.Fatibene, and S.Garruto

TL;DR
This paper explores the equivalence of different frames in extended gravity theories, particularly Palatini f(R) models and their relation to Brans-Dicke theories, at the action level.
Contribution
It provides a detailed analysis of frame equivalence in Palatini f(R) theories and discusses their relation to Brans-Dicke formulations.
Findings
Establishes conditions for frame equivalence in Palatini f(R) theories.
Shows the relation between Palatini f(R) and Brans-Dicke theories.
Clarifies the role of action-level transformations in extended gravity.
Abstract
We shall discuss equivalence of frames in Palatini f(R)-theories at action level. A Palatini formulation of Brans-Dicke theories (equivalent to the purely metric ones) will also be discussed.
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Taxonomy
TopicsBlack Holes and Theoretical Physics
