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 Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

We show that there is a correspondence between cosmology from non-extensivethermodynamics and cosmology with fluids of redefined and generalized equationof state. We first establish the correspondence in the case of basicnon-extensive thermodynamics, and then we proceed by investigating the moreconsistent case, from the quantum field theoretical point of view, of varyingexponent, namely depending on the scale. The obtained duality provides a way ofexplaining the complicated phenomenological forms of the effective fluidequation-of-state parameters that are being broadly used in the literature,since their microphysical origin may indeed lie in the non-extensivethermodynamics of spacetime. Finally, concerning the cosmological behavior, weshow that at late times the effective fluid may drive the universe accelerationeven in the absence of an explicit cosmological constant, and even if theinitial fluid is the standard dust matter one. Similarly, at early times weobtain an effective cosmological constant which is enhanced through screening,and hence it can drive a a successful inflation without spoiling the correctlate-time acceleration.

Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state