Chaplygin and Polytropic gases Teleparallel Robertson-Walker $F(T)$ gravity solutions
Abstract
This paper investigates the Teleparallel Robertson-Walker (TRW) gravity solutions for a Chaplygin gas, and then for any polytropic gas cosmological source. We use the TRW gravity field equations (FEs) for each -parameter value case and the relevant gas equation of state (EoS) to find the new teleparallel solutions. For flat cosmological case, we find analytical solutions valid for any cosmological scale factor. For curved cosmological cases, we find new approximated teleparallel solutions for slow, linear, fast and very fast universe expansion cases summarizing by a double power-law function. All the new solutions will be relevant for future cosmological applications on dark matter, dark energy (DE) quintessence, phantom energy, Anti-deSitter (AdS) spacetimes and several other cosmological processes.
Cite
@article{arxiv.2508.19912,
title = {Chaplygin and Polytropic gases Teleparallel Robertson-Walker $F(T)$ gravity solutions},
author = {Alexandre Landry},
journal= {arXiv preprint arXiv:2508.19912},
year = {2025}
}
Comments
19 pages, 1 figure and 1 table. Published in Mathematics journal