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Interpretation of the first order formalism of f(R)-type gravity and the corresponding second order formalism

Y. Ezawa·H. Iwasaki·Y. Ohkuwa·T. Uegaki·N. Yamada·T. Yano
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Abstract

f(R)-type gravity in the first order formalism is interpreted as Einstein gravity with non-minimal coupling arising from the use of 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.

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Y. Ezawa, H. Iwasaki, Y. Ohkuwa, T. Uegaki, N. Yamada, T. Yano. 2004-05-11. Interpretation of the first order formalism of f(R)-type gravity and the corresponding second order formalism. https://doi.org/10.1393/ncb%2Fi2004-10127-5

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