High Energy Physics - Theory · arXiv:1002.2830 v1 · submitted 15 Feb 2010
Throat Cosmology
The paper says
“We show that, if the reheating temperature was 10^10 - 10^11 GeV, throats with infrared scales in the range of 10^5 GeV to 10^10 GeV can account for the observed dark matter.”
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Abstract
In this thesis, we study throats in the early, hot universe. Throats are a common feature of the landscape of type IIB string theory. If a throat is heated during cosmological evolution, energy is subsequently transferred to other throats and to the standard model. We calculate the heat transfer rate and the decay rate of throat-localized Kaluza-Klein states in a ten-dimensional model. For the calculation, we employ the dual description of the throats in terms of gauge theories. We discuss modifications of the decay rate which arise in flux compactifications and for Klebanov-Strassler throats and emphasize the role of tachyonic scalars in such throats in mediating decays of Kaluza-Klein modes. Our results are also applicable to the energy transfer from the heated standard model to throats. We determine the resulting energy density in throats at our epoch in dependence of their infrared scales and of the reheating temperature. The Kaluza-Klein modes in the throats decay to other sectors with a highly suppressed rate. If their lifetime is longer than the age of the universe, they are an interesting dark matter candidate. We show that, if the reheating temperature was 10^10 - 10^11 GeV, throats with infrared scales in the range of 10^5 GeV to 10^10 GeV can account for the observed dark matter. We identify several scenarios where this type of dark matter is sufficiently stable but where decays to the standard model can be discovered via gamma-ray observations.
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abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: asserted 0.97
What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.27 · human participants 0.01 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.96 · compares with prior results 0.08 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v1). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| In this thesis, we study throats in the early, hot universe. | contribution 0.91 | 0.86 | 0.02 | asserted 0.74 |
| Throats are a common feature of the landscape of type IIB string theory. | background 1.00 | 0.05 | 0.02 | asserted 1.00 |
| If a throat is heated during cosmological evolution, energy is subsequently transferred to other throats and to the standard model. | background 0.95 | 0.10 | 0.07 | asserted 0.87 |
| We calculate the heat transfer rate and the decay rate of throat-localized Kaluza-Klein states in a ten-dimensional model. | contribution 0.93 | 0.96 | 0.04 | asserted 0.99 |
| For the calculation, we employ the dual description of the throats in terms of gauge theories. | method 1.00 | 0.76 | 0.02 | asserted 0.98 |
| We discuss modifications of the decay rate which arise in flux compactifications and for Klebanov-Strassler throats and emphasize the role of tachyonic scalars in such throats in mediating decays of Kaluza-Klein modes. | contribution 0.90 | 0.68 | 0.05 | asserted 0.94 |
| Our results are also applicable to the energy transfer from the heated standard model to throats. | interpretation 0.78 | 0.43 | 0.05 | asserted 0.95 |
| We determine the resulting energy density in throats at our epoch in dependence of their infrared scales and of the reheating temperature. | result 0.80 | 0.95 | 0.11 | asserted 1.00 |
| The Kaluza-Klein modes in the throats decay to other sectors with a highly suppressed rate. | result 0.99 | 0.78 | 0.12 | asserted 1.00 |
| If their lifetime is longer than the age of the universe, they are an interesting dark matter candidate. | interpretation 0.94 | 0.26 | 0.09 | hedged possibility 0.56 |
| We show that, if the reheating temperature was 10^10 - 10^11 GeV, throats with infrared scales in the range of 10^5 GeV to 10^10 GeV can account for the observed dark matter. | result 0.92 | 0.91 | 0.58 | asserted 0.97 |
| We identify several scenarios where this type of dark matter is sufficiently stable but where decays to the standard model can be discovered via gamma-ray observations. | result 0.64 | 0.91 | 0.13 | asserted 0.92 |
What kind of paper the classifier reports this is: theoretical result 1.00 · evidence from proof or derivation 0.99
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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 8,805 input tokens, $0.0004 reported.
Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON
How the literature uses it
What this paper does with the arXiv papers it cites
What it cites · 159 sentences without a confident label
Uses the method or tool of 4 papers
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Using the solution of Eq. [ref] with the normalization of Eq. [ref], we find [equation] Using this result and Eq. [ref], the decay rate of a graviton KK mode follows from Eq. [ref] as [ref] [equation]
Small Numbers from Tunneling Between Brane Throats · The tunneling calculation using a 5d model · 0.85
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This is done by thermally averaging the product of cross section and lost energy, in analogy to the standard calculations of reaction rates in a hot plasma [ref] : [equation] Here [equation] is the distribution function for the gauge bosons, $v$ is the relative velocity of the colliding particles, and $T$ is the temperature of the heated gauge theory.
Randall-Sundrum II Cosmology, AdS/CFT, and the Bulk Black Hole · Energy loss rate to flat 10d space · 0.96
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For an order of magnitude estimate, we can neglect the logarithmic $r$ dependence of the warp factor away from $r=r_s$ and approximate the KS region by a sharp cut off [ref] .
The Throat as a Randall-Sundrum Model with Goldberger-Wise Stabilization · Applicability to other geometries · 0.81
Uses data or values from 4 papers
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To this end, we use the estimate of the expected number of throats in dependence of their infrared scales from Ref. [ref] .
The Ubiquitous Throat · Dark matter in throats · 0.94
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From the explicit supergravity solution from [ref] , we know that the size of the S$^3$ at the bottom of the KS throat is $r_c ∼z^1/3 R$.
Supergravity and a Confining Gauge Theory: Duality Cascades and $\chi$SB-Resolution of Naked Singularities · Flux compactifications à la GKP · 0.96
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For a Calabi-Yau orientifold with a single conifold singularity, the number of vacua with $|z| < |z_*|$ was found to be [ref]
Distributions of flux vacua · Statistics · 0.84
Compares with 9 papers
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Indeed, from Eq. [ref] for $l=0$ and since $L > A$, we get a decay rate of $Γ∼(m R)^16 m_$ in this case, in agreement with [ref] .
The Shape of Gravity in a Warped Deformed Conifold · Some calculations in the gravity picture and relation to earlier work · 0.98
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Indeed, from Eq. [ref] for $l=0$ and since $L > A$, we get a decay rate of $Γ∼(m R)^16 m_$ in this case, in agreement with [ref] .
Heating in Brane Inflation and Hidden Dark Matter · Some calculations in the gravity picture and relation to earlier work · 0.98
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We find that, as long as the embedding manifold is not of minimal size, our decay rate is considerably lower than the decay rate of graviton KK modes between two RS models which was used in previous analyses [ref] of this reheating mechanism.
Warped Reheating in Brane-Antibrane Inflation · Outlook · 1.00
Cites as support 4 papers
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The crucial point is that in the 5d effective theory of a KS throat, the universal Kähler modulus is localized on the UV brane and is thus sequestered from the bottom of the throat [ref] .
The Throat as a Randall-Sundrum Model with Goldberger-Wise Stabilization · Decay of scalar and fermionic KK modes to other throats · 0.98
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The crucial point is that in the 5d effective theory of a KS throat, the universal Kähler modulus is localized on the UV brane and is thus sequestered from the bottom of the throat [ref] .
Supersymmetry Breaking and Moduli Stabilization with Anomalous U(1) Gauge Symmetry · Decay of scalar and fermionic KK modes to other throats · 0.98
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The crucial point is that in the 5d effective theory of a KS throat, the universal Kähler modulus is localized on the UV brane and is thus sequestered from the bottom of the throat [ref] .
SUSY breaking mediation by throat fields · Decay of scalar and fermionic KK modes to other throats · 0.98
Cites as background 22 papers
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The fluxes backreact on the geometry and this backreaction produces a so-called Klebanov-Strassler (KS) throat [ref] : Sufficiently far away from the conifold singularity, the metric again has the form given in Eq. [ref].
Supergravity and a Confining Gauge Theory: Duality Cascades and $\chi$SB-Resolution of Naked Singularities · The Klebanov-Strassler throat · 0.80
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Each fractional D3-brane sources a unit of $F_3$-flux through the 3-cycle of $T^1,1$, where $F_3$ is the field strength of the RR 2-form $C_2$.[Our notation for the form-fields of type IIB supergravity is e.g. as in [ref] .] This flux causes the 5-form flux through $T^1,1$ to depend on the radial coordinate $r$ [ref] :
Hierarchies from Fluxes in String Compactifications · The Klebanov-Strassler throat · 0.92
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Each fractional D3-brane sources a unit of $F_3$-flux through the 3-cycle of $T^1,1$, where $F_3$ is the field strength of the RR 2-form $C_2$.[Our notation for the form-fields of type IIB supergravity is e.g. as in [ref] .] This flux causes the 5-form flux through $T^1,1$ to depend on the radial coordinate $r$ [ref] :
Gravity Duals of Supersymmetric SU(N) x SU(N+M) Gauge Theories · The Klebanov-Strassler throat · 0.92
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