Mutated hybrid inflation on brane and reheating temperature

Ferricha-Alami, M.; Sakhi, Z.; Chakir, H.; Беннаи, М.

doi:10.1140/epjp/i2017-11575-8

Cited by 10 publications

(7 citation statements)

References 47 publications

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“…RSII model is an inflation scenario of the braneworld scenario with d = 4. This means that 3−brane is embedded in the five-dimensional AdS space [28], as a consequence the action of the field equation in RSII model are written as [30]:…”

Section: Formalisme Of Braneworld Inflationmentioning

confidence: 99%

“…The second term of RSII action is the Lagrangian density of ordinary matter on the brane, V is the scalar potential, and T is the brane tension. In this cosmological scenario, the metric projected onto the brane is a spatially flat Friedmann-Robertson-Walker model, the Friedmann equation on the brane has the generalized form [29,30]:…”

Section: Formalisme Of Braneworld Inflationmentioning

confidence: 99%

“…From Eqs. (30,36), we observe that pre/reheating are expressed as functions of tree parameters and a constant equation of state (EoS) ω * . For inflation to be ended the value of ω * should be larger than −1/3, in order to satisfy the condition of density energy dominance and preserve the causality, ω * must be smaller than 1.…”

Section: Pre/reheating Constraints In Supersymmetric Braneworld Infla...mentioning

confidence: 99%

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Preheating and Reheating Constraints in Supersymmetric Braneworld Inflation

Bourakadi,

Bousder,

Sakhi

et al. 2021

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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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Section: Formalisme Of Braneworld Inflationmentioning

confidence: 99%

Section: Formalisme Of Braneworld Inflationmentioning

confidence: 99%

Section: Pre/reheating Constraints In Supersymmetric Braneworld Infla...mentioning

confidence: 99%

See 1 more Smart Citation

Preheating and Reheating Constraints in Supersymmetric Braneworld Inflation

Bourakadi,

Bousder,

Sakhi

et al. 2021

Preprint

Self Cite

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“…These corrections are suppressed by the distance x and the mass m. The c 0 is the normalization constant of gauge zero mode, obtained from Eq. (15).…”

Section: B the Corrections To The Coulomb's Law On String-like Modelsmentioning

confidence: 99%

“…It is remarkable to mention that in the scope of applications of brane-worlds models, several recent works perform the study of the informational entropy [1-7] underlying these scenarios, using Einstein-dilaton systems to derive phenomenologically compatible data. These models are used to respond to LHCb anomalies [8,9], and several others applications, in the context of black holes [10-12], dark matter [13] and inflationary universe theories [14][15][16].Six-dimensional (6D) anti-de Sitter (AdS 6 ) brane-worlds [17,18] have some interesting features, as the remarkable advantage of trapping the massless gauge fields with only gravity [19][20][21][22][23], in opposition to what occurs in 5D domain wall models [24] and DPG models [25], and minimally coupled Dirac fermions [23,[26][27][28][29], even when thin brane models are considered. In the context of Lorentz violation scenarios in brane-worlds, the massless four-dimensional (4D) graviton can be only confined in 6D models [30].…”

mentioning

confidence: 99%

Monopoles on string-like models and the Coulomb's law

2018

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The t'Hooft-Polyakov monopole mass can be substantially altered, in the thick GS and HC brane-world setup, and can be employed to constrain the brane thickness limit. In this work, we comprise a brief review regarding gauge fields localization in the string-like six dimensional brane-world models setup. The correction to the Coulomb's law in two models is studied. Besides, the monopole features are investigated from the point of view of the gauge fields localization in the string-like brane-worlds and its thickness. PACS numbers: 11.25.-w, 03.50.-z, 14.80.Hv I. INTRODUCTIONThe main aim of this work is to deal with the mass of the monopole, in string-like models on six dimensions. It is remarkable to mention that in the scope of applications of brane-worlds models, several recent works perform the study of the informational entropy [1-7] underlying these scenarios, using Einstein-dilaton systems to derive phenomenologically compatible data. These models are used to respond to LHCb anomalies [8,9], and several others applications, in the context of black holes [10-12], dark matter [13] and inflationary universe theories [14][15][16].Six-dimensional (6D) anti-de Sitter (AdS 6 ) brane-worlds [17,18] have some interesting features, as the remarkable advantage of trapping the massless gauge fields with only gravity [19][20][21][22][23], in opposition to what occurs in 5D domain wall models [24] and DPG models [25], and minimally coupled Dirac fermions [23,[26][27][28][29], even when thin brane models are considered. In the context of Lorentz violation scenarios in brane-worlds, the massless four-dimensional (4D) graviton can be only confined in 6D models [30]. Fermions fields in 6D have also prominent applications to the * Electronic address:

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