https://doi.org/10.1140/epjc/s10052-019-6887-0
Regular Article - Theoretical Physics
Dark energy and dark matter interaction in light of the second law of thermodynamics
1
Instituto de Física y Astronomía, Universidad de Valparaíso, Gran Bretaña 1111, Valparaíso, Chile
2
Instituto de Física, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2950, Valparaíso, Chile
* e-mail: victor.cardenas@uv.cl
Received:
6
February
2019
Accepted:
16
April
2019
Published online:
24
April
2019
In the context of thermodynamics we discuss the way inevitable emerge an interaction between dark components, and in this way, provide a mechanism to understand the limits of the LCDM model and the class of interaction models between dark components. Using observational data we have tested two particular models of explicit interaction between dark components and reconstructed the evolution of temperatures for both components. We found that observations suggest the interaction exist with energy flowing from dark energy to dark matter. The best fit also suggest a phantom equation of state parameter for dark energy. We discuss the results having in mind the constraints imposed by thermodynamics.
© The Author(s), 2019
