A reconstruction scheme for f(T) gravity: Variable generalized Chaplygin dark energy gas form. Issue 1 (21st January 2021)

• Record Type: Journal Article
• Authors: Chattopadhyay, Surajit; Chakraborty, Gargee
• Other Names: Zen Vasconcellos C.A. guestEditor.; Hess P.O. guestEditor.; Piccinelli G. guestEditor.; Vargas Magaña M. guestEditor.; Ureña-Lopez L. guestEditor.; González Felipe R. guestEditor.; Boller Th. guestEditor.; Gullberg S. guestEditor.
• Is Part Of: Astronomische Nachrichten. Volume 342:Issue 1/2(2021)
• Page Start: 103
• Page End: 109
• Publication Date: 2021-01-21
• Subjects: f(T) gravity -- variable generalized Chaplygin gas -- bulk viscosity -- thermodynamics; Astronomy -- Periodicals; 520.5
• DOI: 10.1002/asna.202113888
• Languages: English
• ISSNs: 0004-6337

Abstract

Abstract : 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 ΛCDM 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.