Quintessential inflation on the brane and the relic gravity wave background

Sami, M.; Sahni, Varun

doi:10.1103/physrevd.70.083513

Cited by 107 publications

(115 citation statements)

References 87 publications

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“…Here the GR exists as the intermediate regime. In this case the quartic potential in GR patch might come within the 2σ bound [20].…”

Section: Discussionmentioning

confidence: 99%

Gauss–Bonnet braneworld and WMAP three year results

Murray¹,

Myung²

2006

Physics Letters B

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We compare predictions for the spectral index and tensor-scalar ratio in models of patch inflation with the WMAP three year data. There are three cases of these models of inflation, which arise in the Gauss-Bonnet braneworld scenario: Gauss-Bonnet (GB), Randall-Sundrum (RS), and 4D general relativity (GR). We consider the large-field potential V ∝ φ p in both commutative and noncommutative spacetimes, and find that in the cases of the GB and GR patch cosmologies, the quadratic potential is observationally favored, while the quartic potential is ruled out in most patches. Strong noncommutative inflation is excluded in all cases because it leads to a blue-tilted scalar spectral index.

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“…Here the GR exists as the intermediate regime. In this case the quartic potential in GR patch might come within the 2σ bound [20].…”

Section: Discussionmentioning

confidence: 99%

Gauss–Bonnet braneworld and WMAP three year results

Murray¹,

Myung²

2006

Physics Letters B

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“…(14), for ρ << |λ|, differs insignificantly from the FRW equation. The brane model with a positive tension has been discussed in [24][25][26] in the context of the unification of early-and late-time acceleration eras. The braneworld model with a negative tension and a time-like extra dimension can be regarded as being dual to the Randall-Sundrum model [27][28][29] which, as we will show in Sect.…”

Section: Comparison Of Dark Energy In Frw-and Brane-cosmologymentioning

confidence: 99%

Brane cosmology from observational surveys and its comparison with standard FRW cosmology

Astashenok

Elizalde

Haro

et al. 2013

Astrophys Space Sci

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Several dark energy models on the brane are investigated. They are compared with corresponding theories in the frame of 4d Friedmann-Robertson-Walker cosmology. To constrain the parameters of the models considered, recent observational data, including SNIa apparent magnitude measurements, baryon acoustic oscillation results, Hubble parameter evolution data and matter density perturbations are used. Explicit formulas of the so-called state-finder parameters in teleparallel theories are obtained that could be useful to test these models and to establish a link between Loop Quantum Cosmology and Brane Cosmology. It is concluded that a joint analysis as the one developed here allows to estimate, in a very convenient way, possible deviation of the real universe cosmology from the standard Friedmann-Robertson-Walker one.

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“…(18) for ρ << |λ| differs insignificantly from the FRW equation. The brane model with a positive tension has been discussed in [25][26][27] in the context of the unification of early and late time acceleration eras. The braneworld model with a negative tension and a time-like extra dimension can be regarded as being dual to the Randall-Sundrum model [28][29][30].…”

Section: Dark Energy Models On the Brane: The Equation Of State mentioning

confidence: 99%

Equation-of-state formalism for dark energy models on the brane and the future of brane universes

et al. 2012

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Brane dark energy cosmologies, leading to various possible evolutions of our universe, are investigated. The discussion shows that while all these models can be made arbitrarily close to the standard ΛCDM cosmology at present, their future evolutions can be very different, even diverge with time in a number of ways. This includes asymptotic de-Sitter evolution, Little Rip with dissolution of bound structures, and various possible singularities, as the Big Rip, a sudden future singularity (Type II), and Type III and Type IV cases. Specifically, some interesting effects coming from the brane tension are investigated. It is shown, in particular, that the Little Rip occurs faster on the brane model than in usual FRW cosmology. And in the asymptotic de-Sitter regime the influence of the brane tension leads to a deviation of the value of the effective cosmological constant from that corresponding to ordinary dark energy. As a consequence, the value of the inertial force from the accelerating expansion can greatly exceed the corresponding inertial force in ordinary cosmological models.

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Quintessential inflation on the brane and the relic gravity wave background

Cited by 107 publications

References 87 publications

Gauss–Bonnet braneworld and WMAP three year results

Gauss–Bonnet braneworld and WMAP three year results

Brane cosmology from observational surveys and its comparison with standard FRW cosmology

Equation-of-state formalism for dark energy models on the brane and the future of brane universes

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