DE1 - Dark Energy and the Accelerating Universe |
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Speaker |
Tsyba, Pyotr |
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Coauthors |
Meirbekov Bekdaulet, Razina Olga |
| Talk Title |
f(R) gravity with Maxwell term and g-essence |
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Abstract |
We study the geometry of the phase of spatially flat Friedmann-Lemaitre-Robertson-Walker models in f(R) gravity, for a general form of the function f(R) with Maxwell term and g-essence in four dimensions. New effective Lagrangians and Hamiltonians are presented. We examine f(R) with Maxwell term and g-essence with realizing the crossing of the phantom divide line of w_DE=-1 as well as the models in which the universe always stays in the nonphantom (quintessence) phase (w_DE>-1). Some exact solutions of these models are found. Moreover, we reconstruct the corresponding scalar and fermionic potentials. This transition behavior is consistent with the recent observational data analyse. |
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