English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We argue that an interacting scalar-fermion distribution can be used todemonstrate the cosmic acceleration in General Relativity. The interaction isof Yukawa nature and it drives the fermion density to decay with cosmic time.The consistency of the model is established through, (a) a generalization ofthe Om(z) parameter, the present matter density contrast of the universe, and(b) a comparison of theoretical results with observational data, using a MarkovChain Monte Carlo code. A simple model of unified cosmic expansion history isalso discussed. There are more than one instances where the universe goesthrough a transition between subsequent epochs with different patterns ofcosmic expansion. These patterns impose some constraints on the scalar-fermioninteraction profile and on the overall cosmological dynamics.

Scalar-Fermion Interaction as the Driver of Cosmic Acceleration