2022
DOI: 10.48550/arxiv.2202.08355
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Skewness as a test of dark energy perturbations

Abstract: We investigate the role played by dark energy perturbations in the skewness S3 of large-scale matter distribution. We consider a two-fluid universe composed by matter and dark energy, with perturbations in both components, and we estimate numerically the skewness of the matter density field as a function of the dark energy parameters. We characterize today's S3 value for quintessence and phantom dark energy cosmologies as well as its dependence on the matter density parameter Ωm0 and the dark energy sound spee… Show more

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Cited by 1 publication
(2 citation statements)
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“…S 3 can be sensitive to underlying dark energy characteristics [27] or modification of GR. Here we show that the growth of perturbations is sensitive to parameter B 1 as we illustrate in figures 3 and 4.…”
Section: Skewness (S3)mentioning
confidence: 99%
See 1 more Smart Citation
“…S 3 can be sensitive to underlying dark energy characteristics [27] or modification of GR. Here we show that the growth of perturbations is sensitive to parameter B 1 as we illustrate in figures 3 and 4.…”
Section: Skewness (S3)mentioning
confidence: 99%
“…In a purely matter-dominated Einstein-de Sitter Universe, one gets S 3 ≈ 34/7 ≈ 4.857. Any observed deviation from this value can be a signature for a modified gravity model [27].…”
Section: Introductionmentioning
confidence: 97%