Accelerated expansion in modified gravity with a Yukawa-like term

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dc.creatorAtazadeh, K.
dc.creatorSepangi, H. R.
dc.date2006-02-08
dc.date2006-10-01
dc.date.accessioned2026-07-07T12:16:45Z
dc.date.available2026-07-07T12:16:45Z
dc.descriptionWe discuss the Palatini formulation of modified gravity including a Yukawa-like term. It is shown that in this formulation, the Yukawa term offers an explanation for the current exponential accelerated expansion of the universe and reduces to the standard Friedmann cosmology in the appropriate limit. We then discuss the scalar-tensor formulation of the model as a metric theory and show that the Yukawa term predicts a power-law acceleration at late-times. The Newtonian limit of the theory is also discussed in context of the Palatini formalism.
dc.description9 pages, 2 figures, to appear in IJMPD
dc.identifierhttps://arxiv.org/abs/gr-qc/0602028
dc.identifierhttp://arxiv.org/abs/gr-qc/0602028
dc.identifierInt.J.Mod.Phys.D16:687-698,2007
dc.identifierdoi:10.1142/S0218271807009838
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211898
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleAccelerated expansion in modified gravity with a Yukawa-like term
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