Work

Investigating cosmology models through usual and dual kaniadakis entropies: theoretical and observational tensions and features

Year: 2025

Type: article

Abstract: We investigate cosmological models inspired by usual and dual Kaniadakis entropy, constraining them using observational data from CMB, BAO, supernovae, and $$H_0$$ H 0 measurements. Our analysis shows that while the base Kaniadakis models fail to resolve cosmic tensions, their extensions, incorporating dynamic dark energy or non-flat geometry, exhibit improved consistency. Negative values for the Kaniadakis parameter $$\beta $$ β are observationally preferred, favoring the dual entropy formulation. The models are further analyzed for stability, cosmic age predictions, and large-scale structure formation, demonstrating their viability as alternatives to standard cosmology.

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-025-14307-6

Authors: H. R. M. Zarandi, Y. Toda, E. Ebrahimi

Institutions: Shahid Bahonar University of Kerman, Hokkaido University, Kochi University of Technology, Shiraz University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W4410872346

FWCI: 1.356

Cites: 120

Cited by: 3

Related to: 10