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 = "25 nov. 2020"