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Integro-differential equation for brane-world cosmological perturbations
High Energy Physics - Theory · Submitted 23 Apr 2001
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Three of these equations are differential equations written in terms of gauge invariant variables on the brane only, and another of them is an integro-differential equation whose kernel is constructed formally from the Z_2-symmetric retarded Green's function of the bulk gravitational waves.
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The abstract, sentence by sentence
Cosmological perturbations in the brane-world cosmology with a positive tension brane in the AdS background bulk geometry is analyzed by using the doubly gauge-invariant formalism. We derive four independent equations for scalar perturbations in the plane symmetric (K=0) background. Three of these equations are differential equations written in terms of gauge invariant variables on the brane only, and another of them is an integro-differential equation whose kernel is constructed formally from the Z_2-symmetric retarded Green's function of the bulk gravitational waves. We compare these four equations with the corresponding equations in the standard cosmology. As a by-product, we also obtain a set of equations which may be useful in numerical calculations.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Cosmological perturbations in the brane-world cosmology with a positive tension brane in the AdS background bulk geometry is analyzed by using the doubly gauge-invariant formalism. | contribution 0.72 | 0.89 | 0.06 | asserted 1.00 |
| s1 | We derive four independent equations for scalar perturbations in the plane symmetric (K=0) background. | result 0.62 | 0.97 | 0.12 | asserted 1.00 |
| s2 | Three of these equations are differential equations written in terms of gauge invariant variables on the brane only, and another of them is an integro-differential equation whose kernel is constructed formally from the Z_2-symmetric retarded Green's function of the bulk gravitational waves. | result 0.77 | 0.94 | 0.44 | asserted 1.00 |
| s3 | We compare these four equations with the corresponding equations in the standard cosmology. | contribution 0.64 | 0.94 | 0.06 | asserted 0.94 |
| s4 | As a by-product, we also obtain a set of equations which may be useful in numerical calculations. | result 0.71 | 0.94 | 0.05 | hedged possibility 0.98 |
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The paper
Original abstract
Cosmological perturbations in the brane-world cosmology with a positive tension brane in the AdS background bulk geometry is analyzed by using the doubly gauge-invariant formalism. We derive four independent equations for scalar perturbations in the plane symmetric (K=0) background. Three of these equations are differential equations written in terms of gauge invariant variables on the brane only, and another of them is an integro-differential equation whose kernel is constructed formally from the Z_2-symmetric retarded Green's function of the bulk gravitational waves. We compare these four equations with the corresponding equations in the standard cosmology. As a by-product, we also obtain a set of equations which may be useful in numerical calculations.
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How the literature uses it
4 arXiv papers cite this in 8 sentences
Papers citing it · 6 sentences without a confident label
Cites it as background 2 papers
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Although we understand how cosmological perturbations grow on the minimal phantom brane [ref] , we are not completely sure about the case with large contributions from dark radiation ($$) and bulk cosmological constant ($$).
Phantom braneworld and the Hubble tension · CMB reduced parameters · 0.90
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The theory of gauge-invariant perturbations in brane-world cosmology has been extensively investigated and developed [ref] and is qualitatively well understood.
Brane-World Gravity · Brane-World Cosmology: Perturbations · 0.91
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