%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 }