We consider cosmological scenarios based on $f(R,T)$ theories of gravity ($R$ is the Ricci scalar and $T$ is the trace of the energy-momentum tensor) and numerically reconstruct the function $f(R,T)$ which is able to reproduce the same expansion history generated, in the standard General Relativity theory, by dark matter and holographic dark energy. We consider two special $f(R,T)$ models: in the first instance, we investigate the modification $R + 2f(T)$, i.e. the usual Einstein-Hilbert term plus a $f(T)$ correction. In the second instance, we consider a $f(R)+lambda T$ theory, i.e. a $T$ correction to the renown $f(R)$ theory of gravity.

Reconstructing $f(R,T)$ gravity from holographic dark energy

PIATTELLA O
2012-01-01

Abstract

We consider cosmological scenarios based on $f(R,T)$ theories of gravity ($R$ is the Ricci scalar and $T$ is the trace of the energy-momentum tensor) and numerically reconstruct the function $f(R,T)$ which is able to reproduce the same expansion history generated, in the standard General Relativity theory, by dark matter and holographic dark energy. We consider two special $f(R,T)$ models: in the first instance, we investigate the modification $R + 2f(T)$, i.e. the usual Einstein-Hilbert term plus a $f(T)$ correction. In the second instance, we consider a $f(R)+lambda T$ theory, i.e. a $T$ correction to the renown $f(R)$ theory of gravity.
2012
2012
http://dx.doi.org/10.1142/S0218271812500241
MODIFIED THEORY OF GRAVITY; HOLOGRAPHIC DARK ENERGY
M. J. S., Houndjo; Piattella, O
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2125051
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