Resumo

AHMED, Nasr; KAMEL, Tarek M.  e  NOUH, Mohamed I.. A Non-Singular Closed Bouncing Universe Without Violation of Null Energy Condition. Rev. mex. astron. astrofis [online]. 2022, vol.58, n.2, pp.245-255.  Epub 20-Mar-2023. ISSN 0185-1101.  https://doi.org/10.22201/ia.01851101p.2022.58.02.07.

A matter bouncing entropy-corrected cosmological model has been suggested. The model allows only positive curvature with negative pressure and no violation of the null energy condition. The result obtained in this paper is supported by some recent theoretical works where the combination of positive spatial curvature and vacuum energy leads to non-singular bounces with no violation of the null energy condition. An important feature of the current model is that evolutions of the cosmic pressure, energy density and equation of state parameter are independent of the values of the prefactors α and β in the corrected entropy-area relation. The validity of the classical and the new nonlinear energy conditions has been discussed. The cosmographic parameters have been analyzed.