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Cosmological solutions and observational constraints on 5-dimensional braneworld cosmology with gravitating Nambu-Goto matching conditions
Cosmology and Nongalactic Astrophysics · Submitted 28 Mar 2014
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We find that the scenario at hand is in very good agreement with observations, and thus a small departure from the standard Randall-Sundrum scenario is allowed.
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The abstract, sentence by sentence
We investigate the cosmological implications of the recently constructed 5-dimensional braneworld cosmology with gravitating Nambu-Goto matching conditions. Inserting both matter and radiation sectors, we first extract the analytical cosmological solutions. Additionally, we use observational data from Type Ia Supernovae (SNIa) and Baryon Acoustic Oscillations (BAO), along with requirements of Big Bang Nucleosynthesis (BBN), in order to impose constraints on the parameters of the model. We find that the scenario at hand is in very good agreement with observations, and thus a small departure from the standard Randall-Sundrum scenario is allowed.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We investigate the cosmological implications of the recently constructed 5-dimensional braneworld cosmology with gravitating Nambu-Goto matching conditions. | contribution 0.91 | 0.69 | 0.03 | asserted 0.65 |
| s1 | Inserting both matter and radiation sectors, we first extract the analytical cosmological solutions. | method 0.73 | 0.95 | 0.02 | asserted 0.92 |
| s2 | Additionally, we use observational data from Type Ia Supernovae (SNIa) and Baryon Acoustic Oscillations (BAO), along with requirements of Big Bang Nucleosynthesis (BBN), in order to impose constraints on the parameters of the model. | method 0.99 | 0.93 | 0.05 | asserted 0.88 |
| s3 | We find that the scenario at hand is in very good agreement with observations, and thus a small departure from the standard Randall-Sundrum scenario is allowed. | result 0.80 | 0.95 | 0.92 | asserted 0.93 |
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The paper
Original abstract
We investigate the cosmological implications of the recently constructed 5-dimensional braneworld cosmology with gravitating Nambu-Goto matching conditions. Inserting both matter and radiation sectors, we first extract the analytical cosmological solutions. Additionally, we use observational data from Type Ia Supernovae (SNIa) and Baryon Acoustic Oscillations (BAO), along with requirements of Big Bang Nucleosynthesis (BBN), in order to impose constraints on the parameters of the model. We find that the scenario at hand is in very good agreement with observations, and thus a small departure from the standard Randall-Sundrum scenario is allowed.
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References
How the literature uses it
1 arXiv paper cite this in 1 sentence
What it cites · 30 sentences without a confident label
Builds on 1 paper
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In the present work we extended the codimension-1 cosmology of [ref] by allowing both a matter and a radiation sector in order to extract observational constraints on the involved model parameters.
5-dimensional braneworld with gravitating Nambu-Goto matching conditions · Conclusions · 1.00
Uses the method or tool of 1 paper
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If we introduce the usual (dimensionless) luminosity distance $D_L(z;a_i)$, calculated by [equation] with $H_0$ the present Hubble parameter, then the theoretical distance modulus $μ_th$ has a dependence on the model parameters $a_i$ as [equation] Finally, the marginalization over the present Hubble parameter is performed following [ref] , which eventually provides the $χ^2$ likelihood contours for the model parameters that are involved.
Comparison of Standard Ruler and Standard Candle constraints on Dark Energy Models · Observational data and constraints · 1.00
Uses data or values from 2 papers
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In summary, Eq. ([ref]) is the one we will fit, with $𝒞$, $c̃$, $Ṽ$, $ρ_∗$ and $Ω_m0$ as parameters (for simplicity we fix $Ω_k0$ to their Planck + WP + highL + BAO best fit values, namely $Ω_k0=-0.0003$ [ref] ).
Planck 2013 results. XVI. Cosmological parameters · Branch $ϵ=-1$ · 1.00
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We use the Union 2.1 compilation of SnIa data [ref] in order to incorporate Supernovae type Ia constraints.
The Hubble Space Telescope Cluster Supernova Survey: V. Improving the Dark Energy Constraints Above z>1 and Building an Early-Type-Hosted Supernova Sample · Observational data and constraints · 1.00
Compares with 2 papers
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In [ref] for a single dust perfect fluid, which approximates well at least the late-times behaviour, it was found analytically for values of $Ṽ$ extremely close to the Randall-Sundrum fine-tuning the position of the recent passage from a long deceleration era to the present accelerating epoch.
5-dimensional braneworld with gravitating Nambu-Goto matching conditions · 5-dimensional braneworld with gravitating Nambu-Goto matching conditions · 0.92
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The second constant $c̃$ or $$ is the new feature that does not appear in the cosmology of the standard matching conditions [ref] and signals new characteristics in the cosmic evolution.
Brane cosmological evolution in a bulk with cosmological constant · 5-dimensional braneworld with gravitating Nambu-Goto matching conditions · 0.88
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