Interpretation of the first-order formalism of f(R) -type gravity and the corresponding second-order formalism
Abstract
f</em> (R</em>)-type gravity in the first-order formalism is interpreted as Einstein gravity with non-minimal coupling arising from the use of an unphysical frame. Identification of the corresponding second-order higher-curvature gravity in the physical frame is proposed by requiring that the action is the same.
- Publication:
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Nuovo Cimento B Serie
- Pub Date:
- December 2004
- DOI:
- 10.1393/ncb/i2004-10127-5
- arXiv:
- arXiv:gr-qc/0405054
- Bibcode:
- 2004NCimB.119.1141E
- Keywords:
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- General Relativity and Quantum Cosmology
- E-Print:
- 7 pages, extended and revised version of gr-qc/0309010