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  • 1810.10754

    Rights statement: The final publication is available at Springer via http://dx.doi.org/10.1140/epjp/i2019-12382-y

    Accepted author manuscript, 435 KB, PDF document

    Embargo ends: 8/01/20

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Hubble drift in Palatini f(R) theories

Research output: Contribution to journalJournal article

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  • L. Del Vecchio
  • L. Fatibene
  • S. Capozziello
  • M. Ferraris
  • P. Pinto
  • S. Camera
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Article number5
<mark>Journal publication date</mark>31/01/2019
<mark>Journal</mark>European Physical Journal Plus
Issue number1
Volume134
Number of pages10
Publication statusPublished
Early online date8/01/19
Original languageEnglish

Abstract

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.

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The final publication is available at Springer via http://dx.doi.org/10.1140/epjp/i2019-12382-y