https://doi.org/10.1140/epjc/s10052-025-14307-6
Regular Article - Theoretical Physics
Investigating cosmology models through usual and dual kaniadakis entropies: theoretical and observational tensions and features
1
College of Physics, Shahid Bahonar University, PO Box 76175, Kerman, Iran
2
Department of Physics, Hokkaido University, 060-0810, Sapporo, Japan
3
Department of Data Innovation, Kochi University of Technology, 782-8502, Tosayamada, Japan
4
Department of Physics, College of Science, Shiraz University, 71454, Shiraz, Iran
5
Biruni Observatory, College of Science, Shiraz University, 71454, Shiraz, Iran
Received:
25
March
2025
Accepted:
11
May
2025
Published online:
29
May
2025
We investigate cosmological models inspired by usual and dual Kaniadakis entropy, constraining them using observational data from CMB, BAO, supernovae, and 
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 
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.
© The Author(s) 2025
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