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Scalar perturbations in Randall-Sundrum braneworld cosmology

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Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
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Antonio Cardoso

Astrophysics · Submitted 24 Oct 2007

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We find that density perturbations with wavelengths less than a critical value (set by the bulk curvature length) are amplified during horizon re-entry.

how it is stated · asserted 1.00 read the record →

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arXiv ID0710.4507 (version 1)
Pith ID3MJFRIKL, Pith's permanent record of this paper and its review
CitationAntonio Cardoso. "Scalar perturbations in Randall-Sundrum braneworld cosmology." arXiv:0710.4507 (2007). https://pith.science/paper/3MJFRIKL
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The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,624 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.89 · human participants 0.01 · controlled comparison 0.27 · randomized assignment 0.01 · states quantitative result 0.10 · compares with prior results 0.78 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

We study the evolution of scalar perturbations in the radiation-dominated era of Randall-Sundrum braneworld cosmology by numerically solving the coupled bulk and brane master wave equations. We find that density perturbations with wavelengths less than a critical value (set by the bulk curvature length) are amplified during horizon re-entry. Conversely, we explicitly confirm from simulations that the spectrum is identical to GR on large scales. Although this magnification is not relevant for the cosmic microwave background or measurements of large scale structure, it may have some bearing on the formation of primordial black holes in Randall-Sundrum models.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 We study the evolution of scalar perturbations in the radiation-dominated era of Randall-Sundrum braneworld cosmology by numerically solving the coupled bulk and brane master wave equations. contribution 0.60 0.95 0.06 asserted 0.92
s1 We find that density perturbations with wavelengths less than a critical value (set by the bulk curvature length) are amplified during horizon re-entry. result 1.00 0.95 0.58 asserted 1.00
s2 Conversely, we explicitly confirm from simulations that the spectrum is identical to GR on large scales. result 1.00 0.94 0.24 asserted 1.00
s3 Although this magnification is not relevant for the cosmic microwave background or measurements of large scale structure, it may have some bearing on the formation of primordial black holes in Randall-Sundrum models. interpretation 0.99 0.33 0.08 hedged possibility 1.00

What kind of paper the classifier reports this is: simulation study 1.00 · evidence from simulation or computation 1.00.

What was examined, and what was not

sources read
  • arXiv listing abstract v1
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

We study the evolution of scalar perturbations in the radiation-dominated era of Randall-Sundrum braneworld cosmology by numerically solving the coupled bulk and brane master wave equations. We find that density perturbations with wavelengths less than a critical value (set by the bulk curvature length) are amplified during horizon re-entry. Conversely, we explicitly confirm from simulations that the spectrum is identical to GR on large scales. Although this magnification is not relevant for the cosmic microwave background or measurements of large scale structure, it may have some bearing on the formation of primordial black holes in Randall-Sundrum models.

Human review

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What this paper does with the arXiv papers it cites

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

What it cites · 2 sentences without a confident label

Uses the method or tool of 2 papers
Uses data or values from 1 paper
Cites as support 2 papers
  • The reason is that we know that the gravitational force of attraction in the RS model is stronger than in GR on scales less than $ℓ$ [ref] .

    An Alternative to Compactification · Introduction · 0.97

  • The reason is that we know that the gravitational force of attraction in the RS model is stronger than in GR on scales less than $ℓ$ [ref] .

    Gravity in the Randall-Sundrum Brane World · Introduction · 0.97

Cites as background 3 papers

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