https://doi.org/10.1140/epjc/s10052-019-7462-4
Regular Article - Theoretical Physics
Acceleration in Friedmann cosmology with torsion
1
Departamento de Física e Química, Faculdade de Engenharia de Guaratinguetá, Universidade Estadual Paulista (UNESP), Guaratinguetá, São Paulo, SP, 12516-410, Brazil
2
Câmpus Experimental de Itapeva, Universidade Estadual Paulista (UNESP), Rua Geraldo Alckmin, 519-Vila N. Sra. de Fátima, Itapeva, SP, 18409-010, Brazil
3
Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte, Natal, RN, 59300-000, Brazil
* e-mail: s.pereira@unesp.br
Received:
20
June
2019
Accepted:
6
November
2019
Published online:
20
November
2019
A Friedmann like cosmological model in Einstein–Cartan framework is studied when the torsion function is assumed to be proportional to a single 
function coming just from the spin vector contribution of ordinary matter. By analysing four different types of torsion function written in terms of one, two and three free parameters, we found that a model with 
is totally compatible with recent cosmological data, where 
and n are free parameters to be constrained from observations, 
is the matter energy density and 
the critical density. The recent accelerated phase of expansion of the universe is correctly reproduced by the contribution coming from torsion function, with a deceleration parameter indicating a transition redshift of about 0.65.
© The Author(s), 2019
