https://doi.org/10.1140/epjc/s10052-021-09442-9
Regular Article - Theoretical Physics
Matter production effects and interacting scenario within a reconstructed mimetic cosmology for late times
1
Instituto de Física y Astronomía, Universidad de Valparaíso, Gran Bretaña, 1111, Valparaiso, Chile
2
Facultad de Física, Universidad Veracruzana, 91000, Xalapa, Veracruz, Mexico
3
Instituto de Física, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Av. Brasil, 2950, Valparaiso, Chile
Received:
21
May
2021
Accepted:
11
July
2021
Published online:
19
July
2021
In this work we explore two possible scenarios that can be considered to extend a recent proposed model by the authors known as reconstructed mimetic cosmology. This study is complemented with an statistical analysis for each case. The first scenario considers the inclusion of matter production as a possible source of cosmic expansion in the reconstructed mimetic model, at effective level was found that this construction can cross the phantom divide, the model evolves from quintessence to phantom dark energy. The second scenario corresponds to a construction of an interacting scheme for the dark sector which is described by the unified mimetic model. The resulting interaction term (not imposed by an Ansatz), Q, exhibits changes of sign leading to the violation of the second law along the cosmic evolution and non adiabaticity; the temperatures for the components of the dark sector are computed and such components are shown to be out of thermal equilibrium.
© The Author(s) 2021
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