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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Hubble drift in Palatini f(R) theories
AU - Del Vecchio, L.
AU - Fatibene, L.
AU - Capozziello, S.
AU - Ferraris, M.
AU - Pinto, P.
AU - Camera, S.
N1 - The final publication is available at Springer via http://dx.doi.org/10.1140/epjp/i2019-12382-y
PY - 2019/1/31
Y1 - 2019/1/31
N2 - In a Palatini f(R) model, we define chronodynamical effects due to the choice of atomic clocks as standard reference clocks and we develop a formalism able to quantitatively separate them from the usual effective dark sources one has in extended theories, namely the ones obtained by recasting field equations for g˜ in the form of Einstein equations. We apply the formalism to Hubble drift and briefly discuss the issue about the physical frame. In particular, we shall argue that there is not one single physical frame, for example, in the sense one defines measure in one frame while test particles goes along geodesics in the other frame. That is the physical characteristic of extended gravity. As an example, we discuss how the Jordan frame may be well suited to discuss cosmology, though it fails within the solar system. © 2019, Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.
AB - In a Palatini f(R) model, we define chronodynamical effects due to the choice of atomic clocks as standard reference clocks and we develop a formalism able to quantitatively separate them from the usual effective dark sources one has in extended theories, namely the ones obtained by recasting field equations for g˜ in the form of Einstein equations. We apply the formalism to Hubble drift and briefly discuss the issue about the physical frame. In particular, we shall argue that there is not one single physical frame, for example, in the sense one defines measure in one frame while test particles goes along geodesics in the other frame. That is the physical characteristic of extended gravity. As an example, we discuss how the Jordan frame may be well suited to discuss cosmology, though it fails within the solar system. © 2019, Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.
U2 - 10.1140/epjp/i2019-12382-y
DO - 10.1140/epjp/i2019-12382-y
M3 - Journal article
VL - 134
JO - European Physical Journal Plus
JF - European Physical Journal Plus
SN - 2190-5444
IS - 1
M1 - 5
ER -