F-Term Braneworld Inflation in Light of Five-Year Wmap Observations

Bouaouda, A.; Zarrouki, R.; Chakir, H.; Беннаи, М.

doi:10.1142/s0217751x1004927x

Cited by 11 publications

(9 citation statements)

References 23 publications

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“…Braneworld inflation, was mainly shown to play a fondamental role in divers cosmological investigations of early universe and has been proposed to solve some problems of actual cosmological observations like as dark energy [5], tachyonic inflation [6] or black holes systems [7,8]. Recently, some generalized potentials and supersymmetic versions were studied in the framework of Randall-Syndrum model and a best fit to recent observations was given [9,10].…”

Section: Introductionmentioning

confidence: 99%

On Braneworld inflation models in light of WMAP7 data

2010

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We are interested on studying various inflationary spectrum perturbation parameters in the context of the Randall-Sandrum type 2 Braneworld model. We consider in particular three types of potentials. We apply the slow-roll approximation in the high energy limit to constraint the parameter potentials by confronting our results to recent WMAP7 observations. We show that, for some values of the e-folding number N , the monomial potential provides the best fit results to observations data.

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Section: Introductionmentioning

confidence: 99%

On Braneworld inflation models in light of WMAP7 data

2010

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“…D-term inflation was first proposed to solve the fine-tuning problem [47], the D-term require to introduce a U(1) symmetry with a Fayet-Iliopoulos (FI) term ξ, in order to have a broken supersymmetric D-term inflation [48]. The D-term Hybrid inflation was derived to the form [52]:…”

Section: D-term Hybrid Inflationmentioning

confidence: 99%

Preheating and Reheating Constraints in Supersymmetric Braneworld Inflation

Bourakadi,

Bousder,

Sakhi

et al. 2021

Preprint

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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 λ and g for effective production of χ-particles. Considering the phase between the time observable CMB scales crossed the horizon and the present time, we write reheating and preheating parameters Nre, Tre and Npre in terms of the scalar spectral index ns, and prove that, unlike the reheating case, the preheating duration does not depend on the values of the equation of state ω * . 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 ns demand that the potential parameter α is bounded as α ≥ 1 to be consistent with P lanck's data, while the ratio r is in agreement with observation for α ≤ 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 Nre, Tre and Npre in the Hybrid D-term inflation model in the range 0.8 ≤ α ≤ 1.1 and conclude that Tre and Nre require α ≤ 1, while for Npre the condition α ≤ 0.9 must be satisfied, to be compatible with P lanck's results.

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“…In this subsection, we introduce the F-term braneworld hybrid inflationary model [22,23] to give a constraints on various braneworld and inflationary parameters in high-energy approximation (V 2λ). The inflation ends at σ = σ c if σ c ≥ σ end .…”

Section: F-term Inflationmentioning

confidence: 99%

“…The inflation ends at σ = σ c if σ c ≥ σ end . The field values σ c and σ end are given by (22) this is equivalent to the condition…”

Section: F-term Inflationmentioning

confidence: 99%

Supersymmetric Braneworld Inflation in Light of WMAP7 Observations

et al. 2011

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We consider a supersymmetric hybrid inflation in the framework of the RandallSundrum type-2 braneworld model. In particular, we study braneworld inflation in global supersymmetry with F-term and D-term. We show that we can solve partially the fine-tuning problem related to scalar fields coupling constants. We also derive all known spectrum inflationary parameters which are widely consistent with WMAP7, BAO and H 0 data, whereas the scalar spectral index n s > 0.98 which lies outside of the range allowed by observations.

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F-Term Braneworld Inflation in Light of Five-Year Wmap Observations

Cited by 11 publications

References 23 publications

On Braneworld inflation models in light of WMAP7 data

On Braneworld inflation models in light of WMAP7 data

Preheating and Reheating Constraints in Supersymmetric Braneworld Inflation

Supersymmetric Braneworld Inflation in Light of WMAP7 Observations

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