Analysis of Barrow Holographic Dark Energy in Five- Dimensional Modified Gravity

Abstract

In thisthesis,weassumeFRWuniverseincontextof¯ve-dimensional Einstein Chern-Simonstheoryofgravity.TheBarrowholographicdark energy densitywithHubblehorizonasboundaryoftheuniverseistaken intoaccounttostudycosmicevolutionoftheuniverse.Wediscusssome cosmological parameterssuchascoincidenceparameter,densityparame- ter, EoSparameteranddecelerationparameter.Moreover,wealsodiscuss the thermalstabilityincontextofunderlyingscenario.Weplotcoinci- dence parameterwhichexhibitaDEdominatedphaseoftheuniverse.We consider Barrowholographicdarkenergymodelwithbothinteractingand non-interactingscenarioofdarkcomponentstoevaluatetheseparameters and thermalstability.Itismentionedherethatweobtainsomeconsistent results representingacceleratedexpansionoftheuniverse.