On Observables in a Dark Matter-Clustering Quintessence System

Abstract

We consider a system where dark matter dynamics is enriched by the presence of clustering quintessence in the approximation where the system is effectively reduced to one degree of freedom. We study the corresponding observables up to one-loop order and then point out similarities between the power spectrum of the reduced system and the behaviour of non-equal time pure dark matter correlators. We then focus on the one-loop total density power spectrum in the IR limit as a diagnostic tool for consistency relations breaking. Unlike the non-equal time case, the reduced system does still obey consistency relations; we illustrate this by explicitly verifying the 1-loop IR cancellation. A more general setup, obtained by relaxing the assumption of a vanishing sound speed, is also analyzed. In this and similar scenarios the presence of additional dynamics, typical of dark energy and modified gravity models, implies that one may no longer gauge away the squeezed contribution of observables such as the dark matter bispectrum. We show how these effects propagate all the way to biased tracers.

15 pages, 3 figures. New version: extended paper in several directions, including two new plots, and the explicit calculation of the IR cancellation at 1-loop

References in corpus (19)

• Beyond the Cosmological Standard Model
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• The Effective Field Theory of Cosmological Large Scale Structures
• The Cosmic Linear Anisotropy Solving System (CLASS) I: Overview
• Clustering of dark matter tracers: generalizing bias for the coming era of precision LSS
• Cosmological Collider Physics
• A critical look at cosmological perturbation theory techniques
• Flowing with Time: a New Approach to Nonlinear Cosmological Perturbations
• Conformal Symmetries of Adiabatic Modes in Cosmology
• Time-Sliced Perturbation Theory for Large Scale Structure I: General Formalism
• Analytic Prediction of Baryonic Effects from the EFT of Large Scale Structures
• Imprints of Massive Primordial Fields on Large-Scale Structure
• On the EFT of Large Scale Structures in Redshift Space
• Cosmic Web and Environmental Dependence of Screening: Vainshtein vs. Chameleon
• Soft-Pion Theorems for Large Scale Structure
• Non-linear Fields in Generalized Cosmologies
• High Energy Physics Signatures from Inflation and Conformal Symmetry of de Sitter
• Screening in perturbative approaches to LSS
• Non-zero density-velocity consistency relations for large scale structures

Cited by in corpus (6)

• Perturbative description of bias tracers using consistency relations of LSS
• Clustering dark energy and halo abundances
• Self-Interacting Dark Matter in Cosmology: accurate numerical implementation and observational constraints
• Optimizing the Evolution of Perturbations in the $\Lambda$CDM Universe
• Skewness of matter distribution in clustering dark energy cosmologies
• A Tale of Two Scales: Screening in Large Scale Structure