In this work, we study some thermodynamical aspects associated with torsion
in a flat FLRW spacetime cosmic evolution. By implementing two Ansatze for the
torsion term, we find that the model admits a phantom regime or a quintessence
behavior. This scheme differs from the $Łambda$CDM model at the
thermodynamical level. The resulting cosmic expansion is not adiabatic, the
fulfillment of the second law of thermodynamics requires a positive torsion
term, and the temperature of the cosmic fluid is always positive. The entropy
of the torsion phantom scenario is negative, but introducing chemical potential
solves this issue. For a Dirac-Milne type Universe, the torsion leads to a
growing behavior for the temperature of the fluid but has no incidence on the
rate of expansion.
%0 Generic
%1 cruz2020nonzero
%A Cruz, Miguel
%A Izaurieta, Fernando
%A Lepe, Samuel
%D 2020
%K cosmology grqc
%T Non-zero torsion and late cosmology
%U http://arxiv.org/abs/2005.04550
%X In this work, we study some thermodynamical aspects associated with torsion
in a flat FLRW spacetime cosmic evolution. By implementing two Ansatze for the
torsion term, we find that the model admits a phantom regime or a quintessence
behavior. This scheme differs from the $Łambda$CDM model at the
thermodynamical level. The resulting cosmic expansion is not adiabatic, the
fulfillment of the second law of thermodynamics requires a positive torsion
term, and the temperature of the cosmic fluid is always positive. The entropy
of the torsion phantom scenario is negative, but introducing chemical potential
solves this issue. For a Dirac-Milne type Universe, the torsion leads to a
growing behavior for the temperature of the fluid but has no incidence on the
rate of expansion.
@misc{cruz2020nonzero,
abstract = {In this work, we study some thermodynamical aspects associated with torsion
in a flat FLRW spacetime cosmic evolution. By implementing two Ansatze for the
torsion term, we find that the model admits a phantom regime or a quintessence
behavior. This scheme differs from the $\Lambda$CDM model at the
thermodynamical level. The resulting cosmic expansion is not adiabatic, the
fulfillment of the second law of thermodynamics requires a positive torsion
term, and the temperature of the cosmic fluid is always positive. The entropy
of the torsion phantom scenario is negative, but introducing chemical potential
solves this issue. For a Dirac-Milne type Universe, the torsion leads to a
growing behavior for the temperature of the fluid but has no incidence on the
rate of expansion.},
added-at = {2020-05-16T10:45:22.000+0200},
author = {Cruz, Miguel and Izaurieta, Fernando and Lepe, Samuel},
biburl = {https://www.bibsonomy.org/bibtex/2a29a58336224176b51187f7368dc0fcb/apollocraft7},
description = {Non-zero torsion and late cosmology},
interhash = {c335d19bc386dfafe60bfb0ab4e61e8f},
intrahash = {a29a58336224176b51187f7368dc0fcb},
keywords = {cosmology grqc},
note = {cite arxiv:2005.04550Comment: 19 pages, 1 figure},
timestamp = {2020-05-16T10:47:22.000+0200},
title = {Non-zero torsion and late cosmology},
url = {http://arxiv.org/abs/2005.04550},
year = 2020
}