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193 papers · 1 filter
An Effective Framework for Entropy Modifications via Stochastic Metric Fluctuations
Amir A. Khodahami, Ahmad Sheykhi
Deviations from the area law of horizon entropy are often modeled phenomenologically through modified Friedmann equations in cosmology. In this work, we explore an effective stocha…
Hints Beyond CDM from Barrow and Tsallis Holographic Dark Energy with GO cutoff
G. G. Luciano, A. Paliathanasis, G. Leon +2
Barrow and Tsallis Holographic Dark Energy (HDE) are two recent extensions of the standard HDE framework, obtained by introducing generalized entropy corrections through the Barrow…
Emergence of the cosmic space inspired by mass-to-horizon entropy
Ahmad Sheykhi
The conception of gravity as an emergent phenomenon, rooted in the thermodynamics of spacetime, offers a radical departure from its geometric description. This paper investigates t…
Constraining Zero-Point Length from Gravitational Baryogenesis
Ava Shahbazi Sooraki, Ahmad Sheykhi
The existence of a fundamental zero-point length, , a minimal spacetime scale predicted by T-duality in string theory or quantum gravity theories, modifies the entropy associa…
Observational constraints on the modified cosmology inspired by string T-duality
G. G. Luciano, A. Paliathanasis, A. Sheykhi
We explore the cosmological consequences of a modified cosmology inspired by string T-duality. We incorporate the zero-point length correction, , into the gravitational potent…
Holographic dark energy in modified Kaniadakis cosmology
A. Sheykhi, A. Asvar, E. Ebrahimi
It is well-known that any modification to the entropy expression not only change the energy density of the holographic dark energy, but also modifies the cosmological field equatio…