Phenomenology of large scale structure in scalar-tensor theories: Joint prior covariance of 
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, 
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, and 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>μ</mml:mi></mml:math>
 in Horndeski theories

Espejo, Juan; Peirone, Simone; Raveri, Marco; Koyama, K.; Pogosian, Levon; Silvestri, Alessandra

doi:10.1103/physrevd.99.023512

Phys. Rev. D

2019

DOI: 10.1103/physrevd.99.023512

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Phenomenology of large scale structure in scalar-tensor theories: Joint prior covariance of wDE , Σ , and μ in Horndeski theories

Juan Espejo

¹

,

Simone Peirone

²

,

Marco Raveri

³

et al.

Abstract: Ongoing and upcoming cosmological surveys will significantly improve our ability to probe the equation of state of dark energy, wDE, and the phenomenology of Large Scale Structure. They will allow us to constrain deviations from the ΛCDM predictions for the relations between the matter density contrast and the weak lensing and the Newtonian potential, described by the functions Σ and µ, respectively. In this work, we derive the theoretical prior for the joint covariance of wDE, Σ and µ, expected in general sca… Show more

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Cited by 48 publications

(25 citation statements)

References 60 publications

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“…Finally, as pointed out in [64] based on analytical considerations in the QSA limit, and later confirmed by a numerical sampling of Horndeski solutions [37,83], one expects a strong correlation between µ and Σ, with (Σ − 1)(µ − 1) ≥ 0. To violate the latter condition, independent sectors/terms of the Horndeski theory would need to conspire to evolve in just the right way for no apparent reason.…”

Section: A Implications For Horndeskisupporting

confidence: 55%

Principal reconstructed modes of dark energy and gravity

Raveri¹,

Pogosian²,

Martinelli³

et al. 2021

Preprint

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

show abstract

“…Finally, as pointed out in [64] based on analytical considerations in the QSA limit, and later confirmed by a numerical sampling of Horndeski solutions [37,83], one expects a strong correlation between µ and Σ, with (Σ − 1)(µ − 1) ≥ 0. To violate the latter condition, independent sectors/terms of the Horndeski theory would need to conspire to evolve in just the right way for no apparent reason.…”

Section: A Implications For Horndeskisupporting

confidence: 55%

Principal reconstructed modes of dark energy and gravity

Raveri¹,

Pogosian²,

Martinelli³

et al. 2021

Preprint

Self Cite

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

show abstract

“…At the level of 1σ, however, it is possible to see how both µ(z) and Σ(z) deviate from the GR limit for n = 1, while for a free n, µ(z) was consistent with unity. Indeed, for this specific choice of n we find that µ(z) ≈ Σ(z), which is a condition that arises for stable Horndeski theories of gravity [77].…”

Section: Fixing Nmentioning

confidence: 71%

Cosmological Constraints on sub-horizon scales modified gravity theories with MGCLASS II

Sakr

¹

,

Martinelli

²

2021

Preprint

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

show abstract

“…The most important feature of the Horndeski prior is a strong positive correlation between μ and Σ, with preference for (Σ − 1)(μ − 1) ≥ 0, which was anticipated in ref. 39 on the basis of analytical considerations and later confirmed by a numerical sampling of Horndeski solutions 41,47 . These 33 parameters associated with Ω X , μ and Σ, along with the remaining cosmological parameters, were fitted to several combinations of datasets using MGCosmoMC 33,34,48 (https://github.com/ sfu-cosmo/MGCosmoMC), which is a modification of CosmoMC 49 (https://cosmologist.info/cosmomc).…”

Section: Reconstruction and The Role Of The Theory Priormentioning

confidence: 75%

“…Figure 1 shows the joint reconstruction of Ω X (z), μ(z) and Σ(z) from a combination of CMB, baryon acoustic oscillation (BAO), supernova, weak gravitational lensing and redshift space distortion data, along with the derived reconstruction of γ(z). The reconstruction was performed with and without a theoretical prior, derived previously from simulations of Horndeski theories 41 . One can clearly see the important role played by the theory prior in preventing overfitting of the data.…”

Section: Resultsmentioning

confidence: 99%

Imprints of cosmological tensions in reconstructed gravity

Pogosian

¹

,

Raveri

²

,

Koyama

³

et al. 2022

Self Cite

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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