Paper Info
Title
Cosmological Solutions for the Geometrical Scalar-Tensor with the Potential Determined by the Noether Symmetry Approach
Abstract
The aim of this work is to study a scalar-tensor theory where owing to Palatini's variational method the space-time is endowed with a geometrical structure of Weyl integrable type. The geometrical nature of the scalar field is related to the non-metricity so that the theory is known as geometrical scalar-tensor. On the framework of Weyl transformations, a non-minimally coupled scalar-tensor theory on the Jordan frame corresponds to a minimally coupled Einstein-Hilbert action on the Einstein frame. The scalar potential is selected by the Noether symmetry approach in order to obtain conserved quantities for the FRW cosmological model. Exact solutions are obtained and analyzed in the context of the cosmological scenarios consistent with an expanding universe. A particular case is matched in each frame and the role of scalar field as a dark energy component is discussed.
Year
DOI
Venue
2020
10.3390/sym12071110
SYMMETRY-BASEL
Keywords
DocType
Volume
Noether symmetry,exact solutions,FRW spacetime,scalar field cosmologies
Journal
12
Issue
Citations 
PageRank 
7
0
0.34
References 
Authors
0
2
Name
Order
Citations
PageRank
Barreto Adriano B.100.34
Kremer Gilberto M.200.34