Non-Linear Matter Power Spectrum Modeling in Interacting Dark Energy Cosmologies

Abstract

Understanding the behavior of the matter power spectrum on non-linear scales beyond the $\Lambda$CDM model is crucial for accurately predicting the large-scale structure (LSS) of the Universe in non-standard cosmologies. In this work, we present an analysis of the non-linear matter power spectrum within the framework of interacting dark energy-dark matter cosmologies (IDE). We employ N-body simulations and theoretical models to investigate the impact of IDE on these non-linear scales. Beginning with N-body simulations characterized by a fixed parameter space delineated by prior observational research, we adeptly fit the simulated spectra with a simple parametric function, achieving accuracy within 5\%. Subsequently, we refine a modified halo model tailored to the IDE cosmology, exhibiting exceptional precision in fitting the simulations down to scales of approximately 1 h/Mpc. To assess the model's robustness, we conduct a forecast analysis for the Euclid survey, employing our refined model. We find that the coupling parameter $\xi$ will be constrained to $\sigma (\xi )=0.0110$. This marks a significant improvement by an order of magnitude compared to any other current observational tests documented in the literature. These primary findings pave the way for a novel preliminary approach, enabling the utilization of IDE models for observational constraints concerning LSS data on non-linear scales.

15 pages, 6 figures and 1 table. Matches the version published in EPJC

References in corpus (26)

• Transients from Initial Conditions in Cosmological Simulations
• Large-scale instability in interacting dark energy and dark matter fluids
• Late-time cosmology with 21cm intensity mapping experiments
• Probing the interaction between dark matter and dark energy in the presence of massive neutrinos
• Arbitrating the $S_8$ discrepancy with growth rate measurements from Redshift-Space Distortions
• Growing Matter
• Modelling baryonic feedback for survey cosmology
• Dark sector interaction: a remedy of the tensions between CMB and LSS data
• A combined analysis of the $H_0$ late time direct measurements and the impact on the Dark Energy sector
• Redshift-Space Distortions in Lagrangian Perturbation Theory
• Cluster Cepheids with High Precision Gaia Parallaxes, Low Zeropoint Uncertainties, and Hubble Space Telescope Photometry
• Coupled dark matter-dark energy in light of near Universe observations
• The Gaussian streaming model and Lagrangian effective field theory
• Interacting Dark Energy in a closed universe
• Dark Coupling and Gauge Invariance
• On the road to percent accuracy IV: ReACT -- computing the non-linear power spectrum beyond $\Lambda$CDM
• Coupled and uncoupled early dark energy, massive neutrinos and the cosmological tensions
• Dark degeneracy I: Dynamical or interacting dark energy?
• Extending the modeling of the anisotropic galaxy power spectrum to $k=0.4h{\mathrm{Mpc}}^{-1}$
• Cosmological direct detection of dark energy: non-linear structure formation signatures of dark energy scattering with visible matter
• SP(k) -- A hydrodynamical simulation-based model for the impact of baryon physics on the non-linear matter power spectrum
• Multi-interacting dark energy and its cosmological implications
• Late-Time constraints on Interacting Dark Energy: Analysis independent of $H_0$, $r_d$ and $M_B$
• A new coupled three-form dark energy model and implications for the $H_0$ tension
• Dark Matter Halos in Interacting Dark Energy Models: Formation History, Density Profile, Spin and Shape
• Sesame: A power spectrum emulator pipeline for beyond-$\Lambda$CDM models

Cited by in corpus (14)

• Robust Preference for Dynamical Dark Energy in DESI BAO and SN Measurements
• New constraints on interacting dark energy from DESI DR2 BAO observations
• Quantifying the $S_8$ tension and evidence for interacting dark energy from redshift-space distortion measurements
• Sign Switching in Dark Sector Coupling Interactions as a Candidate for Resolving Cosmological Tensions
• Testing signatures of phantom crossing through full-shape galaxy clustering analysis
• Kinetic Model for Dark Energy - Dark Matter Interaction: Scenario for the Hubble Tension
• III. Interacting Dark Energy: Summary of Models, Pathologies, and Constraints
• Do we need wavelets in the late Universe?
• II. Non-Linear Interacting Dark Energy: Analytical Solutions and Theoretical Pathologies
• Late-time Background Constraints on Linear and Non-linear Interacting Dark Energy after DESI DR2
• I. Linear Interacting Dark Energy: Analytical Solutions and Theoretical Pathologies
• One-loop power spectrum corrections in interacting dark energy cosmologies
• Hint of dark matter-dark energy interaction in DESI DR2 and current cosmological dataset?
• Revisiting the Matter Creation Process: Observational Constraints on Gravitationally Induced Dark Energy and the Hubble Tension