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RECONSTRUCTION OF f(R, T) GRAVITY DESCRIBING MATTER DOMINATED AND ACCELERATED PHASES
Open accessAbstract
We investigate the cosmological reconstruction in modified f(R, T) gravity, where R is the Ricci scalar and T the trace of the stress–energy tensor. Special attention is attached to the case in which the function f is given by f(R, T) = f 1(R) + f 2(T). The use of auxiliary scalar field is considered with two known examples for the scale factor corresponding to an expanding universe. In the first example, where ordinary matter is usually neglected for obtaining the unification of matter dominated and accelerated phases with f(R) gravity, it is shown in this paper that this unification can be obtained without neglecting ordinary matter. In the second example, as in f(R) gravity, model of f(R, T) gravity with transition of matter dominated phase to the acceleration phase is obtained. In both cases, linear function of the trace is assumed for f 2(T) and it is obtained that f 1(R) is proportional to a power of R with exponents depending on the input parameters.
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Cites
Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
Riess, A. G., Filippenko, A. V., Challis, P., Clocchiatti, A., Diercks, A., Garnavich, P. M., Gilliland, R. L., Hogan, C. J., Jha, S., Kirshner, R. P., et al. (1998) · The Astronomical Journal · doi:10.1086/300499 · Cited by 19,704
Measurements of Ω and Λ from 42 High‐Redshift Supernovae
Perlmutter, S., Aldering, G., Goldhaber, G., Knop, R. A., Nugent, P., Castro, P. G., Deustua, S., Fabbro, S., Goobar, A., Groom, D. E., et al. (1999) · The Astrophysical Journal · doi:10.1086/307221 · Cited by 18,062
Construction of cosmologically viable gravity models
De Felice, A., & Tsujikawa, S. (2009) · Physics Letters B · doi:10.1016/j.physletb.2009.03.060 · Cited by 366
Cited by
Harko, T., Lobo, F. S. N., Nojiri, S., & Odintsov, S. D. (2011) · Physical Review D · doi:10.1103/physrevd.84.024020 · Cited by 2,772
Modified gravity theories on a nutshell: Inflation, bounce and late-time evolution
Nojiri, S., Odintsov, S. D., & Oikonomou, V. K. (2017) · Physics Reports · doi:10.1016/j.physrep.2017.06.001 · Cited by 2,734
Metadata
- Authors
- HOUNDJO, M. J. S.
- Venue
- International Journal of Modern Physics D
- Publisher
- World Scientific Pub Co Pte Lt
- Published
- 2012-01
- Volume
- 21
- Issue
- 01
- Pages
- 1250003
- ISSN
- 0218-2718 (ISSN-L)
- 1793-6594
- OpenAlex
- W2109886799
- Cited by
- 397
- References
- 3
- FWCI
- 8.30
- Type
- journal article
- Language
- en
- Open access
- green
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- HOUNDJO, M. J. S. (2012). RECONSTRUCTION OF f(R, T) GRAVITY DESCRIBING MATTER DOMINATED AND ACCELERATED PHASES. International Journal of Modern Physics D. https://doi.org/10.1142/s0218271812500034
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