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July 10, 2026International Journal of Modern Physics A0 citations

New entropy à   la Born–Infeld, thermodynamics of apparent horizon and cosmology

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SKSerguei Krouglov

Key Points

  • This research proposes a new entropy model and explores its implications on cosmic parameters such as acceleration and dark energy.
  • Proposed a new one-parameter entropy connected to the Bekenstein–Hawking entropy.
  • Considered a spatial flat Friedmann–Lemaître–Robertson–Walker universe with barotropic matter fluid.
  • Derived modified Friedmann equations and effective cosmological constants from the model.
  • Showcases two phases of the universe: acceleration and deceleration based on specific parameter values.
  • Establishes correlations with observational Hubble data within a certain percentage.
  • Demonstrates that the proposed model can effectively describe cosmic inflation and current acceleration.

Abstract

New one-parameter entropy with the function Formula: see text with Formula: see text being the Bekenstein–Hawking entropy is proposed. At the limit Formula: see text, Formula: see text becomes the Bekenstein–Hawking entropy. The spatial flat Friedmann–Lemaître–Robertson–Walker universe is considered. We study the entropic cosmology with the barotropic matter fluid. The modified Friedmann equations and the effective (dynamical) cosmological constant are obtained. From Friedmann’s equations the dark energy density, pressure and the deceleration parameter are obtained. It is demonstrated that at some parameters Formula: see text and Formula: see text one has two phases, acceleration and deceleration or the eternal inflation. At the entropy parameter Formula: see text, where Formula: see text is the current Hubble rate, the normalized density of the matter field at the current time Formula: see text and the deceleration parameter Formula: see text take place according to the Planck data. The model under consideration using the entropic cosmology can describe the universe inflation and the current universe acceleration. We show that the entropic cosmology under consideration corresponds to the certain teleparallel gravity with the torsion. The Hubble parameters within Formula: see text% are in approximate agreement with the observational Hubble data for redshifts Formula: see text.

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Cite This Study

Serguei Krouglov (2026) studied this question.

synapsesocial.com/papers/6a508da76eeac72a437a1020https://doi.org/10.1142/s0217751x26501435
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