On Inflation in String Theory

Renata Kallosh

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On Inflation in String Theory

Renata Kallosh

High Energy Physics - Theory · Submitted 8 Feb 2007

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

The authors' main claim We also discuss a possibility to test string theory by cosmological observations.

how it is stated · hedged possibility 0.99 read the record →

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.06 · human participants 0.01 · controlled comparison 0.01 · randomized assignment 0.01 · states quantitative result 0.02 · compares with prior results 0.06 · mentions code or data availability 0.02.

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arXiv listing abstract v2. Results and the main claim are underlined; show every role.

In this talk we describe recent progress in construction of inflationary models in the context of string theory with flux compactification and moduli stabilization. We also discuss a possibility to test string theory by cosmological observations.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	In this talk we describe recent progress in construction of inflationary models in the context of string theory with flux compactification and moduli stabilization.	contribution 0.99	0.56	0.10	asserted 0.91
s1	We also discuss a possibility to test string theory by cosmological observations.	contribution 0.68	0.17	0.15	hedged possibility 0.99

What kind of paper the classifier reports this is: review 0.90 · evidence from literature 0.51.

What was examined, and what was not

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arXiv listing abstract v2

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full text
figures and tables
references and citing sentences
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P abstract

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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

In this talk we describe recent progress in construction of inflationary models in the context of string theory with flux compactification and moduli stabilization. We also discuss a possibility to test string theory by cosmological observations.

Human review

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References

Forward citations

Cited by 22 Pith papers

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

Hypernatural inflation
hep-th 2018-03 conditional novelty 7.0 of 10

Natural inflation with the axion as the inflaton is realized in α-attractor supergravity, where hyperbolic field-space geometry makes the effective axion decay constant exponentially large.
Phenomenology of a Pseudo-Scalar Inflaton: Naturally Large Nongaussianity
astro-ph.CO 2011-02 accept novelty 7.0 of 10

Coupling a pseudo-scalar inflaton to gauge fields via phi F F-tilde produces large, nearly equilateral nongaussianity in the cosmic microwave background, with a distinctive combination of large tensor-to-scalar ratio ...
Primordial perturbations and non-Gaussianities in DBI and general multi-field inflation
hep-th 2008-06 accept novelty 7.0 of 10

In multi-field DBI inflation every perturbation mode propagates at a single common sound speed, entropy modes are amplified by 1/c_s, and the resulting non-Gaussianity is suppressed by the entropy-curvature transfer factor.
Cosmology with Nilpotent Superfields
hep-th 2014-08 conditional novelty 6.0 of 10

Imposing S squared equals zero on the goldstino chiral multiplet removes the sgoldstino scalar from a wide class of supergravity inflation and KKLT uplifting models, simplifying them and tying them to Volkov-Akulov an...
Gauge-flation confronted with Planck
astro-ph.CO 2013-08 conditional novelty 6.0 of 10

A corrected calculation of the scalar and tensor perturbations of Gauge-flation shows that no value of its single parameter reproduces both the Planck spectral index and the Planck tensor-to-scalar ratio, ruling the m...

Show 17 more citing papers

Stability analysis of chromo-natural inflation and possible evasion of Lyth's bound
astro-ph.CO 2012-12 conditional novelty 6.0 of 10

Chromo-natural inflation is stable only for m_g > 2H; below that, scalar perturbations grow rapidly inside the horizon, but the model can still evade Lyth's bound by producing chiral gravitational waves.
On Slow-roll Moduli Inflation in Massive IIA Supergravity with Metric Fluxes
hep-th 2008-12 conditional novelty 6.0 of 10

For all but two of the standard toroidal orientifold compactifications of massive type IIA with metric fluxes, the slow-roll parameter epsilon is bounded below by a number of order one, excluding slow-roll inflation a...
Perturbations in generalized multi-field inflation
hep-th 2008-01 accept novelty 6.0 of 10

For a broad class of multi-field inflation Lagrangians, the adiabatic perturbation propagates at an effective sound speed while every entropy perturbation propagates at the speed of light.
Simple de Sitter Solutions
hep-th 2007-12 conditional novelty 6.0 of 10

A type IIA compactification on two nilmanifolds with orientifolds, KK5-branes, and fluxes yields metastable de Sitter minima whose curvature, coupling, and Hubble scale can be tuned small.
Inflationary Constraints on Type IIA String Theory
hep-th 2007-11 accept novelty 6.0 of 10

In type IIA Calabi-Yau compactifications with standard fluxes, D6-branes and O6-planes at large volume and weak coupling, the slow-roll parameter obeys epsilon >= 27/13 wherever the potential is positive, so inflation...
Slow-Roll Inflation in Non-geometric Flux Compactification
hep-th 2013-02 conditional novelty 5.0 of 10

In a genetic search over non-geometric flux vacua, roughly ten stable de Sitter solutions appear, and two-dimensional slices of their scalar potentials show slow-roll parameters below one along a direction driven by t...
Poly-instanton Inflation
hep-th 2011-10 conditional novelty 5.0 of 10

Poly-instanton corrections to the type IIB superpotential can drive slow-roll inflation on a Kähler fibre modulus, predicting ns about 0.96 and r about 10^-5.
Gauge Field Production in Axion Inflation: Consequences for Monodromy, non-Gaussianity in the CMB, and Gravitational Waves at Interferometers
astro-ph.CO 2011-10 conditional novelty 5.0 of 10

Backreaction from gauge fields produced during axion inflation extends inflation by about 10 e-foldings and enhances the gravitational wave signal enough to be potentially visible at Advanced LIGO/VIRGO.
Bell violation in the Sky
hep-th 2016-07 reject novelty 4.0 of 10

A time-dependent heavy-field mass during inflation is used to define a new curvature observable claimed to fix the inflation scale and bound the heavy-particle mass, though the Bell-violation link is not derived.
Chaotic Inflation in Supergravity after Planck and BICEP2
hep-th 2014-05 conditional novelty 4.0 of 10

A cubic term added to the superpotential of quadratic chaotic inflation in supergravity produces a two-parameter family of potentials whose tilt and tensor ratio can be fitted to Planck 2013 and BICEP2 data.
Multi-Natural Inflation in Supergravity and BICEP2
hep-ph 2014-03 conditional novelty 4.0 of 10

A two-sine-wave inflaton potential can span a broad region of (n_s, r) space, including n_s near or above unity with r around 0.1 to 0.2, so the model is not excluded by BICEP2.
More stable dS vacua from S-dual non-geometric fluxes
hep-th 2013-04 conditional novelty 4.0 of 10

Explicit flux configurations on anisotropic tori yield 11 anti-de Sitter and 7 de Sitter vacua that are stable within a 14-real-modulus truncation, with the de Sitter cases stable only via the Breitenlohner-Freedman c...
Particle physics models of inflation and curvaton scenarios
hep-ph 2010-01 accept novelty 3.0 of 10

The review argues that inflatons and curvatons built from MSSM flat directions are the class most tightly tied to known particle physics, and therefore the class most likely to be falsified by CMB and collider data.
String Cosmology: A Review
hep-th 2007-10 accept novelty 3.0 of 10

String cosmology's central obstacle is the eta problem: moduli stabilization generically generates inflaton mass terms of order the Hubble scale, and no fully explicit, correction-controlled string inflation model yet exists.
TASI Lectures on Inflation
hep-th 2009-07 accept novelty 2.0 of 10

A complete, self-contained exposition of how a brief period of accelerated expansion solves the Big Bang's initial-condition problems and converts quantum vacuum fluctuations into the nearly scale-invariant scalar and...
Relativistic cosmology and large-scale structure
astro-ph 2007-05 accept novelty 2.0 of 10

A comprehensive review that derives the dynamics and perturbations of the Friedmann-Lemaitre universe, plus CMB and neutrino physics, within a single 1+3 covariant formalism.
Inflation and String Theory
hep-th 2014-04 accept novelty 1.0 of 10

A survey arguing that inflation is ultraviolet-sensitive and therefore requires a quantum gravity completion, then cataloguing the string theory constructions that attempt to provide one.

How the literature uses it

67 arXiv papers cite this in 101 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 · 46 sentences without a confident label

Compares with it 2 papers

[ref] to model natural inflation in supergravity.

Axion Inflation in Type II String Theory · A simplistic $N$ conifold toy model · 0.81
It is instructive to compare this new class of models with the previously considered models of chaotic inflation in supergravity, with the power-law potential [ref] , K = δ_αβ̅ z^αz̅^β̅ + J(z) + J̅(z̅) + ...

New models of chaotic inflation in supergravity · Superconformal Approach to Supergravity · 1.00

Cites it as support 1 paper

All known models of modular inflation in string theory (no branes) do not predict a detectable level of gravity waves [ref] , [ref] .

Testing String Theory with CMB · Existing models of string theory inflation do not predict a detectable level of tensor modes · 0.99

Cites it as background 45 papers

String theory at present has produced two classes of models of inflation: brane inflation and modular inflation, see [ref] for recent reviews.

Testing String Theory with CMB · Existing models of string theory inflation do not predict a detectable level of tensor modes · 0.95
Since the ground breaking work of KKLT [ref] , which provided a mechanism to stabilize all moduli in the context of type IIB string theory, a lot of work has been done toward understanding inflation in string theory setups that are under control [ref] , [ref] , [ref] , [ref] , [ref] , [ref] , [ref] .

On Slow-roll Moduli Inflation in Massive IIA Supergravity with Metric Fluxes · Introduction · 0.99
A discussion of the possibility of justifying the shift-symmetric quadratic Kähler potentials in string theory was given in [ref] .

Axion Inflation and Gravity Waves in String Theory · On a possibility of shift-symmetric quadratic Kähler potentials in string theory · 0.97

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