Extended Thermodynamics to Einstein-Cartan Cosmology

TL;DR

This paper extends thermodynamics to Einstein-Cartan cosmology, exploring how spin-torsion density influences entropy, temperature, and universe size, with implications for early universe inflation and fundamental limits.

Contribution

It introduces a thermodynamic framework incorporating spin-torsion density into Einstein-Cartan cosmology, linking it to entropy, temperature, and universe size constraints.

Findings

A relation between spin-torsion density, entropy, and temperature is established.

A lower bound for the universe's radius based on spin-torsion density and Planck length is derived.

Implications for inflationary phases in Einstein-Cartan-de Sitter models are discussed.

Abstract

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.