Abstract
We study the evolution of the Universe at early stages; we discuss also preheating in the framework of hybrid braneworld inflation by setting conditions on the coupling constants \(\lambda \) and g for effective production of \(\chi \)-particles. Considering the phase between the time observable CMB scales crossed the horizon and the present time, we write reheating and preheating parameters \(N_{re}\), \(T_{re}\) and \(N_{pre}\) in terms of the scalar spectral index \(n_{s}\) and prove that, unlike the reheating case, the preheating duration does not depend on the values of the equation of state \(\omega ^{*}\). We apply the slow-roll approximation in the high energy limit to constrain the parameters of D-term hybrid potential. We show also that some inflationary parameters, in particular, the spectral index \(n_{s}\) demand that the potential parameter \(\alpha \) is bounded as \(\alpha \ge 1\) to be consistent with Planck’s data, while the ratio r is in agreement with observation for \( \alpha \le 1 \) considering high inflationary e-folds. We also propose an investigation of the brane tension effect on the reheating temperature. Comparing our results to recent CMB measurements, we study preheating and reheating parameters \(N_{re}\), \(T_{re}\) and \(N_{pre}\) in the Hybrid D-term inflation model in the range \(0.8\le \alpha \le 1.1\) and conclude that \(T_{re}\) and \(N_{re}\) require \(\alpha \le 1\), while for \(N_{pre}\) the condition \(\alpha \le 0.9\) must be satisfied, to be compatible with Planck’s results.
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11 September 2021
In the original version of this article, the given and family names of Khalil El Bourakadi were incorrectly structured. This has been corrected.
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Preheating and Reheating Constraints in Supersymmetric Braneworld Inflation.
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El Bourakadi, K., Bousder, M., Sakhi, Z. et al. Preheating and reheating constraints in supersymmetric braneworld inflation. Eur. Phys. J. Plus 136, 888 (2021). https://doi.org/10.1140/epjp/s13360-021-01887-x
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DOI: https://doi.org/10.1140/epjp/s13360-021-01887-x