Dark energy and dark matter interaction in light of the second law of thermodynamics

Víctor H. Cárdenas, Daniela Grandón, Samuel Lepe

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

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.

Original languageEnglish
Article number357
JournalEuropean Physical Journal C
Volume79
Issue number4
DOIs
StatePublished - 1 Apr 2019
Externally publishedYes

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