On Metric Preheating

DARC; France); Germany); Guenter Sigl (Univ. of Chicago; Karsten Jedamzik (MPA Garching; Meudon; USA

RECORD

On Metric Preheating

Karsten Jedamzik (MPA Garching, Germany), Guenter Sigl (Univ. of Chicago, USA, DARC, Meudon, France)

High Energy Physics - Phenomenology · Submitted 8 Jun 1999

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

The authors' main claim Employing perturbation theory with backreaction included as spatial averages to second order in the scalar fields and in the metric, we argue that the usual inflationary prediction for metric perturbations on scales relevant for structure formation is not strongly modified.

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arXiv IDhep-ph/9906287 (version 2)

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

CitationDARC, France), Germany), Guenter Sigl (Univ. of Chicago, Karsten Jedamzik (MPA Garching, Meudon, USA. "On Metric Preheating." arXiv:hep-ph/9906287 (1999). https://pith.science/paper/MNRYHCSA

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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, 3,011 input tokens, $0.0001 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.60 · human participants 0.01 · controlled comparison 0.10 · randomized assignment 0.01 · states quantitative result 0.06 · compares with prior results 0.64 · mentions code or data availability 0.01.

The abstract, sentence by sentence

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

We consider the generation of super-horizon metric fluctuations during an epoch of preheating in the presence of a scalar field \chi quadratically coupled to the inflaton. We find that the requirement of efficient broad resonance is concomitant with a severe damping of super-horizon \delta\chi quantum fluctuations during inflation. Employing perturbation theory with backreaction included as spatial averages to second order in the scalar fields and in the metric, we argue that the usual inflationary prediction for metric perturbations on scales relevant for structure formation is not strongly modified.

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	We consider the generation of super-horizon metric fluctuations during an epoch of preheating in the presence of a scalar field \chi quadratically coupled to the inflaton.	contribution 0.80	0.57	0.05	unclear 0.48
s1	We find that the requirement of efficient broad resonance is concomitant with a severe damping of super-horizon \delta\chi quantum fluctuations during inflation.	result 1.00	0.92	0.11	asserted 1.00
s2	Employing perturbation theory with backreaction included as spatial averages to second order in the scalar fields and in the metric, we argue that the usual inflationary prediction for metric perturbations on scales relevant for structure formation is not strongly modified.	result 0.87	0.87	0.81	asserted 0.51

What kind of paper the classifier reports this is: theoretical result 1.00 · evidence from proof or derivation 0.94.

What was examined, and what was not

sources read

arXiv listing abstract v2

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 consider the generation of super-horizon metric fluctuations during an epoch of preheating in the presence of a scalar field \chi quadratically coupled to the inflaton. We find that the requirement of efficient broad resonance is concomitant with a severe damping of super-horizon \delta\chi quantum fluctuations during inflation. Employing perturbation theory with backreaction included as spatial averages to second order in the scalar fields and in the metric, we argue that the usual inflationary prediction for metric perturbations on scales relevant for structure formation is not strongly modified.

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References

Forward citations

Cited by 4 Pith papers

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

Adiabatic and entropy perturbations from inflation
astro-ph 2000-09 accept novelty 7.0 of 10

Rotating multi-field inflationary perturbations into adiabatic and entropy components shows entropy modes source curvature on large scales only when the background trajectory curves in field space, while curvature nev...
Reconstructing Primordial Curvature Perturbations via Scalar-Induced Gravitational Waves with LISA
astro-ph.CO 2025-01 conditional novelty 6.0 of 10

LISA can reconstruct the primordial curvature power spectrum from scalar-induced gravitational waves, with percent-level precision near the peak and Bayesian tests separating SIGWs from other sources.
A new approach to the evolution of cosmological perturbations on large scales
astro-ph 2000-03 accept novelty 6.0 of 10

The curvature perturbation on uniform-density slices is conserved on super-horizon scales for adiabatic pressure, and this follows from local energy-momentum conservation alone, without Einstein's equations.
Metric preheating and radiative decay in single-field inflation
astro-ph.CO 2020-02 conditional novelty 5.0 of 10

Perturbative decay of the inflaton into a perfect fluid does not disrupt the metric preheating instability until the fluid dominates the energy budget.

How the literature uses it

8 arXiv papers cite this in 9 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 whose main result relates to this one's

Found among the papers closest to this one by title and main claim. Pith's classifier compared each pair's main results and a second model family confirmed the relation; checked against two further families, shown conflicts agreed 118 times in 120 and shown same results 218 times in 239. The quoted sentence is the other paper's main claim.

States the same result 1 paper

We estimate analytically the upper limit of the amplitude of the metric perturbations for all scales in the limit of so-called broad resonance, and show that the large scale metric perturbations are very small, and taking them into account does not influence the standard picture of the production of the metric perturbations in inflationary scenario.

On generation of metric perturbations during preheating · 0.89

Papers citing it · 7 sentences without a confident label

Cites it as background 2 papers

This effect of the resonant amplification of the metric perturbations is often quoted as “metric preheating" [ref] .

Studying Aspects of the Early Universe with Primordial Black Holes · The perturbations: The case of metric preheating · 0.83
These enhanced quantum fluctuations are accompanied by a resonant amplification of the scalar metric fluctuations (usually quoted as metric preheating [ref] ), or, in other terms, with enhanced curvature perturbations, responsible for the generation of SIGWs [ref] and potentially for PBH formation [ref] (see however [ref] for an assessment on the role of non-linearities and anharmonicities).

Reconstructing Primordial Curvature Perturbations via Scalar-Induced Gravitational Waves with LISA · Other classes of models · 0.83

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