Towards multi-field D-brane inflation in a warped throat

Gianmassimo Tasinato; Heng-Yu Chen; Jinn-Ouk Gong; Kazuya Koyama

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Towards multi-field D-brane inflation in a warped throat

Heng-Yu Chen, Jinn-Ouk Gong, Kazuya Koyama, Gianmassimo Tasinato

High Energy Physics - Theory · Submitted 13 Jul 2010

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The authors' main claim Inflation is realized by the motion of a D-brane along the radial direction of the throat, and at later stages instabilities develop in the angular directions.

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arXiv ID1007.2068 (version 2)

Pith IDKC2IQPD4, Pith's permanent record of this paper and its review

CitationGianmassimo Tasinato, Heng-Yu Chen, Jinn-Ouk Gong, Kazuya Koyama. "Towards multi-field D-brane inflation in a warped throat." arXiv:1007.2068 (2010). https://pith.science/paper/KC2IQPD4

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.23 · human participants 0.01 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.04 · compares with prior results 0.05 · mentions code or data availability 0.01.

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We study the inflationary dynamics in a model of slow-roll inflation in warped throat. Inflation is realized by the motion of a D-brane along the radial direction of the throat, and at later stages instabilities develop in the angular directions. We closely investigate both the single field potential relevant for the slow-roll phase, and the full multi-field one including the angular modes which becomes important at later stages. We study the main features of the instability process, discussing its possible consequences and identifying the vacua towards which the angular modes are driven.

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We study the inflationary dynamics in a model of slow-roll inflation in warped throat.	contribution 0.95	0.90	0.04	asserted 0.93
s1	Inflation is realized by the motion of a D-brane along the radial direction of the throat, and at later stages instabilities develop in the angular directions.	method 0.47	0.56	0.18	asserted 1.00
s2	We closely investigate both the single field potential relevant for the slow-roll phase, and the full multi-field one including the angular modes which becomes important at later stages.	contribution 0.89	0.94	0.08	asserted 0.94
s3	We study the main features of the instability process, discussing its possible consequences and identifying the vacua towards which the angular modes are driven.	contribution 0.89	0.94	0.28	asserted 0.75

What kind of paper the classifier reports this is: theoretical result 0.99 · evidence from proof or derivation 0.89.

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Original abstract

We study the inflationary dynamics in a model of slow-roll inflation in warped throat. Inflation is realized by the motion of a D-brane along the radial direction of the throat, and at later stages instabilities develop in the angular directions. We closely investigate both the single field potential relevant for the slow-roll phase, and the full multi-field one including the angular modes which becomes important at later stages. We study the main features of the instability process, discussing its possible consequences and identifying the vacua towards which the angular modes are driven.

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References

Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

A Statistical Approach to Multifield Inflation: Many-field Perturbations Beyond Slow Roll
astro-ph.CO 2012-07 conditional novelty 6.0 of 10

In an ensemble of six-field string inflation models, multifield and many-field corrections to the power spectrum are common, but in models matching the observed tilt they occur almost entirely on unobservably large scales.
Universality in D-brane Inflation
astro-ph.CO 2011-03 conditional novelty 6.0 of 10

Across more than 70 million realizations of six-field D-brane inflation, the probability of N e-folds is a power law with exponent near 3, and observationally viable single-field cases require at least 120 e-folds and...

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9 arXiv papers cite this in 20 sentences

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

Papers citing it · 18 sentences without a confident label

Cites it as background 2 papers

In recent years there has been significant progress within the `KKLT' framework, [ref] , in which the older idea of brane inflation [ref] , is realised via the motion of a brane in internal, hidden, extra dimensions [ref] (see also [ref] and the reviews [ref] ).

Spinflation with Angular Potentials · Introduction · 1.00
Multifield inflationary models open up even further possibilities, such as curvatons [ref] , turning [ref] or bifurcating [ref] trajectories, thermal effects [ref] and etc [For a recent review on non-Gaussian effects for different inflationary models, see [ref] which also contains an organized classification of different types of non-Gaussianity.].

A Note on Calm Excited States of Inflation · Introduction · 0.89

What it cites · 61 sentences without a confident label

Uses the method or tool of 3 papers

To study the D3 trajectory in such a throat, an elegant systematic way to parametrize the potential experienced by a D3-brane was recently given in Refs. [ref] , which can be summarized succintly as

Holographic Systematics of D-brane Inflation · Parametrizing the potential and multiple field inflation · 0.94
To study the D3 trajectory in such a throat, an elegant systematic way to parametrize the potential experienced by a D3-brane was recently given in Refs. [ref] , which can be summarized succintly as

D3-brane Potentials from Fluxes in AdS/CFT · Parametrizing the potential and multiple field inflation · 0.94
To parametrize the angular coordinate $Ψ_i$, we can rewrite the matrix $W$ as [ref]

Towards an Explicit Model of D-brane Inflation · Extremal trajectory and angular mass matrix · 0.87

Compares with 1 paper

The observational predictions from slow-roll inflation is very similar to those in the Kuperstein embedding [ref] .

Towards a warped inflationary brane scanning · Slow-roll inflation in the Ouyang embedding · 1.00

Cites as support 3 papers

Notice that, as shown in Ref. [ref] , if the separation between brane and antibrane is sufficiently large, the Coulomb potential does not depend on the angular coordinates.

Towards Inflation in String Theory · An explicit inflaton potential: Ouyang embedding case · 0.96
As shown in Ref. [ref] , the main point to notice is that bulk contributions to the angular potential give rise to suppressed by powers of the warp factor.

D3-brane Vacua in Stabilized Compactifications · Slow-roll inflation in the Ouyang embedding · 0.97
As shown in Ref. [ref] , this force is generically suppressed with respect to the other contributions to the D3 potential.

Towards an Explicit Model of D-brane Inflation · An explicit inflaton potential: Ouyang embedding case · 0.99

Cites as background 15 papers

The parametric solution to ([ref]) have been extensively investigated in Refs. [ref] .

Holographic Systematics of D-brane Inflation · Parametrizing the potential and multiple field inflation · 0.89
The parametric solution to ([ref]) have been extensively investigated in Refs. [ref] .

D3-brane Potentials from Fluxes in AdS/CFT · Parametrizing the potential and multiple field inflation · 0.89
In the original model, a Kuperstein-embedded D7-brane on the warped conifold [ref] was considered, and the non-perturbative gaugino condensation on its worldvolume contributes to stabilize all the moduli besides the inflaton.

Meson spectroscopy from holomorphic probes on the warped deformed conifold · Introduction and summary · 0.81

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