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arxiv: gr-qc/0006015 · v1 · submitted 2000-06-04 · 🌀 gr-qc

Extended Thermodynamics to Einstein-Cartan Cosmology

L.C.Garcia de Andrade This is my paper
classification 🌀 gr-qc
keywords densityspin-torsionthermodynamicscosmologydiscussedeinstein-cartaneinstein-cartan-deentropy
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The thermodynamics is extented to spacetimes with spin-torsion density.Impplications to Einstein-Cartan-de Sitter inflationary phases are discussed.A relation between the spin-torsion density,entropy and temperature is presented.A lower limit for the radius of the Universe may be obtained from the spin-torsion density and the Planck lenght.

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  1. Hamilton-Jacobi Approach to Inflationary Scenarios through Extended Entropies: An Observational Perspective

    astro-ph.CO 2026-05 unverdicted novelty 4.0

    Hamilton-Jacobi analysis of slow-roll inflation with non-Bekenstein-Hawking entropies yields fitted entropy parameters (δ≈1.1-1.2, α∼10^{-14}, K∼10^{-17}) consistent with ns and r data.