Premium
A reconstruction scheme for f ( T ) gravity: Variable generalized Chaplygin dark energy gas form
Author(s) -
Chattopadhyay Surajit,
Chakraborty Gargee
Publication year - 2021
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.202113888
Subject(s) - chaplygin gas , dark energy , physics , equation of state , entropy (arrow of time) , viscous liquid , mathematical physics , classical mechanics , cosmology , theoretical physics , thermodynamics , astrophysics
The present study reports a reconstruction scheme for f ( T ) gravity under the assumption that the density due to the torsion T evolves like the variable‐generalized Chaplygin gas (VGCG), a phenomenological candidate of dark energy. This reconstruction has been demonstrated in viscous as well as non‐viscous cases. The state‐finder trajectory { r − s } has been found to attain the Λ CDM fixed point under this reconstruction scenario. The reconstructed equation of state parameter (EoS) has been studied for their phantom/quintom behavior. The effect of bulk viscous pressure has been found to become prominent in the late stage. The generalized second law (GSL) of thermodynamics has been studied for Bekeinstein ‐ Hawking entropy area relation in both non‐viscous and viscous cases. The GSL is found to be valid in both cases.