https://doi.org/10.1140/epjc/s10052-018-6521-6
Regular Article - Theoretical Physics
Cosmological constraints on alternative model to Chaplygin fluid revisited
1
Facultad de Ingeniería, Universidad Autónoma de Querétaro, Centro Universitario Cerro de las Campanas, 76010, Santiago de Querétaro, Mexico
2
Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Avda. Gran Bretaña 1111, Valparaiso, Chile
3
Unidad Académica de Física, Universidad Autónoma de Zacatecas, Calzada Solidaridad esquina con Paseo a la Bufa S/N, CP 98060, Zacatecas, Mexico
4
Consejo Nacional de Ciencia y Tecnología, Av. Insurgentes Sur 1582. Colonia Crédito Constructor, Del. Benito Juárez, CP 03940, Mexico City, Mexico
* e-mail: ahalmada@uaq.mx
Received:
3
September
2018
Accepted:
13
December
2018
Published online:
7
January
2019
In this work we explore an alternative phenomenological model to Chaplygin gas proposed by Hova et al. (Int J Mod Phys D 26:1750178, 2017), consisting on a modification of a perfect fluid, to explain the dynamics of dark matter and dark energy at cosmological scales immerse in a flat or curved universe. Adopting properties similar to a Chaplygin gas, the proposed model is a mixture of dark matter and dark energy components parameterized by only one free parameter denoted as 
. We focus on contrasting this model with the most recent cosmological observations of Type Ia supernovae and Hubble parameter measurements. Our joint analysis yields a value 
(
) for a flat (curved) universe. Furthermore, with these constraints we also estimate the deceleration parameter today 
, the acceleration-deceleration transition redshift 
, and the universe age 
Gyrs. We also report a best value of 
consistent at 
with the one reported by Planck Collaboration. Our analysis confirm the results by Hova et al. this Chaplygin gas-like is a plausible alternative to explain the nature of the dark sector of the universe.
© The Author(s), 2019
