ACCELERATED EXPANSION IN MODIFIED GRAVITY WITH A YUKAWA-LIKE TERM
2007 ◽
Vol 16
(04)
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pp. 687-697
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Keyword(s):
We 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.
2009 ◽
Vol 24
(22)
◽
pp. 1785-1792
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2015 ◽
Vol 32
(21)
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pp. 215009
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Keyword(s):
2012 ◽
Vol 27
(18)
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pp. 1250100
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2013 ◽
Vol 22
(14)
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pp. 1350083
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Keyword(s):
2020 ◽
Vol 493
(2)
◽
pp. 2085-2100
2003 ◽
Vol 12
(03)
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pp. 445-460
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