@Article{Penna-LimaVitAlvAraCar:2019:ReEnCo,
author = "Penna-Lima, M. and Vitenti, Sandro D. P. and Alves, M{\'a}rcio
Eduardo da Silva and Ara{\'u}jo, Jos{\'e} Carlos Neves de and
Carvalho, F{\'a}bio Cabral",
affiliation = "{Universidade de Bras{\'{\i}}lia (UnB)} and {Louvain University}
and {Universidade Estadual Paulista (UNESP)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade do
Estado do Rio Grande do Norte (UERN)}",
title = "Reconstruction of energy conditions from observations and
implications for extended theories of gravity",
journal = "European Physical Journal C",
year = "2019",
volume = "79",
number = "2",
pages = "e175",
month = "Feb.",
abstract = "The attempt to describe the recent accelerated expansion of the
Universe includes different propositions for dark energy models
and modified gravity theories. Establish their features in order
to discriminate and even rule out part of these models using
observational data is a fundamental issue of cosmology. In the
present work we consider a class of extended theories of gravity
(ETG) that are minimally coupled to the ordinary matter fields. In
this context, and assuming a homogeneous and isotropic spacetime,
we derive the energy conditions for this ETG class. We then put
constraints on these conditions using a model-independent approach
to reconstruct the deceleration function along with the Joint
Light-curve Analysis (JLA) supernova sample, 11 baryon acoustic
oscillation and 22 cosmic-chronometer measurements. We also
consider an additional condition imposing the strong energy
condition only on the ordinary matter. This is to guarantee the
presence of only attractive matter in the energymomentum tensor,
at least in the redshift range of the observations, i.e., the
recent accelerated expansion of the Universe is due solely to the
modifications in the gravity theory. The main result of this work
is a general reconstruction of the energy conditions valid for
every considered ETG.",
doi = "10.1140/epjc/s10052-019-6668-9",
url = "http://dx.doi.org/10.1140/epjc/s10052-019-6668-9",
issn = "1434-6044",
language = "en",
targetfile = "penna_reconstruction.pdf",
urlaccessdate = "27 abr. 2024"
}