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2010

Dark energy from modified gravity with Lagrange multipliers

Capozziello, Salvatore, Matsumoto, Jiro, Nojiri, Shin'ichi et al.

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We study scalar-tensor theory, k-essence and modified gravity with Lagrange multiplier constraint which role is to reduce the number of degrees of freedom.

Dark Energy cosmology of different types ($\Lambda$CDM, unified inflation with DE, smooth non-phantom/phantom transition epoch) is reconstructed in such models.
It is shown that mathematical equivalence between scalar theory and $F(R)$ gravity is broken due to presence of constraint.
The cosmological dynamics of $F(R)$ gravity is modified by the second $F_2(R)$ function dictated by the constraint.

Dark energy from modified gravity with Lagrange multipliers · Around

Built on

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S. Capozziello, R. De Ritis, C. Rubano and P. Scudellaro, Riv. Nuovo Cim. 19N4
1996
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T. Chiba, T. Okabe and M. Yamaguchi, Phys. Rev. D 62
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R. R. Caldwell, Phys. Lett. B 545
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Earlier work this paper cites.

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C. Gao, Y. Gong, X. Wang and X. Chen, arXiv:1003.6056 [astro-ph.CO]
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S. Nojiri and S.D. Odintsov, arXiv:1004.3613
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Cited in the paper.

Then

S. Nojiri and S. D. Odintsov, Phys. Rev. D 68
Original
2008
Later among the works it cites.
S. Capozziello and A. De Felice, JCAP 0808
Original
2008
Later among the works it cites.
S. Capozziello, P. Martin-Moruno and C. Rubano, Phys. Lett. B 664
Original
2008
Later among the works it cites.
J. Matsumoto and S. Nojiri, Phys. Lett. B 687
Original
2010
Closest in time.

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