Abstract
We study the original Chaplygin gas model in the context of Randall-Sundrum type-II braneworld with a hyperbolic potential. We consider the Chaplygin gas as a candidate for inflation by using the latest data release from Planck 2015. We found that the various inflationary spectrum parameters ns, r and \(\frac{dn_{s}}{d\;\text{ln}\;k}\) depend only on the number of e-folds. The compatibility of these parameters with the last measurement of Planck is realized with large values of N. In this context, a suitable observational central value of ns = 0.965 is obtained in the case of the original Chaplygin gas and a hyperbolic potential.
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Khay, I., Salamate, F., Safsafi, A. et al. Hyperbolic Potential with Original Chaplygin Gas in Braneworld Inflation. Gravit. Cosmol. 25, 172–178 (2019). https://doi.org/10.1134/S0202289319020099
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DOI: https://doi.org/10.1134/S0202289319020099