Thermodynamics in Non-Zero Torsion Theory
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Date
2021
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Library Information Services COMSATS University Islamabad Lahore Campus
Abstract
In thisthesis,westudythecosmicevolutionoftheacceleratinguniverse
in theEinstein-Cartan-Sciama-Kibbletheorybyusing°athomogeneous
and isotropicmodel.Inthisregards,weconsidersomeparameterizations
of theequationofstateparameter ! in termsofredshiftfunction.This
parametrization maybeaTaylorseriesextensioninthescalefactor,a
Taylorseriesextensionintheredshiftoranyothergeneralparametrization
of !. Weusegraphicalbehaviortoexplorethecosmologicalparameters
suchasdeceleration,Om-diagnostic,state¯nderandsquaredspeedofsound
parameters. Also,weexaminethevalidityofthegeneralizedsecondlaw
of thermodynamicsatapparenthorizontakingintoaccountBekenstein-
Hawkingentropy.
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Dr. Shamaila Rani, fa19, Department of Mathematics, MATHEMATICS