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A reconstruction scheme for f(T) gravity: Variable generalized Chaplygin dark energy gas form
Astronomische Nachrichten ( IF 0.9 ) Pub Date : 2021-01-21 , DOI: 10.1002/asna.202113888
Surajit Chattopadhyay 1 , Gargee Chakraborty 1
Affiliation  

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.

中文翻译:

f(T)引力的一种重构方案:可变广义Chaplygin暗能量气体形式

本研究报告了一种假设,假设扭转力T的密度像暗能量现象的变广义Chaplygin气体(VGCG)一样演化,假设fT重力为重建方案。这种重建已在粘性和非粘性情况下得到了证明。发现状态发现者轨迹{ r  -  s }达到Λ在此重建方案下的CDM定点。研究了重建的状态参数方程(EoS)的幻像/昆特特性。已经发现,总粘性压力的作用在后期变得显着。对于非粘性和粘性情况下的Bekeinstein-Hawking熵面积关系,已经研究了热力学的广义第二定律(GSL)。发现GSL在两种情况下均有效。
更新日期:2021-03-22
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