1 | Note that we do not take into account a direct coupling between the Ricci scalar and matter (such as ![]() |
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2 | This result is a consequence of the action principle, but it can be derived also by a direct calculation, using the Bianchi identities. | |
3 | There are some other works about theoretical constructions of f (R) models based on quantum gravity, supergravity and extra dimensional theories [341, 345, 537, 406, 163, 287, 288, 518, 519]. | |
4 | In [426] the reheating temperature is estimated by taking the maximum value of ![]() ![]() ![]() ![]() |
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5 | The cosmological dynamics for the model ![]() |
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6 | If we define ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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7 | In strict mathematical sense the instantaneous fixed point is not formally defined because it varies with time. | |
8 | There are several works about the background cosmological dynamics for some ![]() |
http://www.livingreviews.org/lrr-2010-3 | ![]() This work is licensed under a Creative Commons License. Problems/comments to |