Generalized Holographic Cosmology: low-redshift observational constraint
  Four-dimensional cosmological models are studied on a boundary of a
five-dimensional Anti-de Sitter (AdS_5) black hole with AdS Reissner-Nordstrom
and scalar charged Reissner- Nordstrom black hole solutions, where we call the
former a "Hairless" black hole and the latter a "Hairy" black hole. To obtain
the Friedmann-Robertson-Walker (FRW) spacetime metric on the boundary of the
AdS_5 black hole, we employ Eddington-Finkelstein (EF) coordinates to the bulk
geometry. We then derive modified Friedmann equations on a boundary of the
AdS_5 black hole via AdS/CFT correspondence and discuss its cosmological
implications. The late-time acceleration of the universe is investigated in our
models. The contributions coming from the bulk side is treated as a dark energy
source, and we perform MCMC analyses using observational data. Compared to the
LCDM model, our models contain additional free parameters; therefore, to make a
fair comparison, we use the Akaike information criterion (AIC) and the Bayesian
information criterion (BIC) to analyze our results. Our numerical analyses show
that our models can explain the observational data as reliable as the LCDM
model does for the current data.
