Perovskite applied to the oxidative coupling of methane generated in the treatment...
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Author(s): 
Moraes, P. H. R. S.
;
Sahoo, P. K.
Total Authors: 2

Document type:  Journal article 
Source:  EUROPEAN PHYSICAL JOURNAL C; v. 77, n. 7 JUL 18 2017. 
Web of Science Citations:  29 
Abstract  
f (R, T) gravity is an extended theory of gravity in which the gravitational action contains general terms of both the Ricci scalar R and the trace of the energymomentum tensor T. In this way, f (R, T) models are capable of describing a nonminimal coupling between geometry (through terms in R) and matter (through terms in T). In this article we construct a cosmological model from the simplest nonminimal mattergeometry coupling within the f (R, T) gravity formalism, by means of an effective energymomentum tensor, given by the sum of the usual matter energymomentum tensor with a dark energy contribution, with the latter coming from the mattergeometry coupling terms. We apply the energy conditions to our solutions in order to obtain a range of values for the free parameters of the model which yield a healthy and wellbehaved scenario. For some values of the free parameters which are submissive to the energy conditions application, it is possible to predict a transition from a decelerated period of the expansion of the universe to a period of acceleration (dark energy era). We also propose further applications of this particular case of the f (R, T) formalism in order to check its reliability in other fields, rather than cosmology. (AU)  
FAPESP's process:  15/084760  Gravitational waves in f(R,T) theories: polarization states and astrophysical sources 
Grantee:  Pedro Henrique Ribeiro da Silva Moraes 
Support type:  Scholarships in Brazil  PostDoctorate 