Dark Matter and Dark Energy Interactions: Theoretical Challenges, Cosmological Implications and Observational Signatures

Abstract

Models where Dark Matter and Dark Energy interact with each other have been proposed to solve the coincidence problem. We review the motivations underlying the need to introduce such interaction, its influence on the background dynamics and how it modifies the evolution of linear perturbations. We test models using the most recent observational data and we find that the interaction is compatible with the current astronomical and cosmological data. Finally, we describe the forthcoming data sets from current and future facilities that are being constructed or designed that will allow a clearer understanding of the physics of the dark sector.

98 pages, submitted to Reports on Progress in Physics

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• Barrow holographic dark energy interacting model in the presence of radiation and matter
• Redshift evolution of the Hubble constant: Constraints and new insights from an interacting dark energy model
• Measuring neutrino mass in light of ACT DR6 and DESI DR2
• Inflation in non-local hybrid metric-Palatini gravity
• Coupled quintessence inspired by warm inflation
• Signature of the interaction between dark sectors in the reionization process
• Hints Beyond $\Lambda$CDM from Barrow and Tsallis Holographic Dark Energy with GO cutoff
• Diagnostic Approaches for Interacting generalized holographic Ricci Dark Energy Models
• Cosmological Evolution of Viscous Dark Energy in f(Q,C) Gravity: Two-Fluid Approach
• Thermodynamics of a transient phantom scenario
• Imprints of dark matter-massive neutrino interaction in upcoming post-reionization and galaxy surveys
• Cosmological dynamics of interacting dark energy and dark matter in $f(Q)$ gravity
• Non-Parametric Analysis for the Dark Matter Density Evolution
• Dynamical systems analysis of a cosmological model with interacting Umami Chaplygin fluid in adiabatic particle creation mechanism: Some bouncing features
• Perturbation in an interacting dark universe
• A novel two-field pure K-essence for inflation, dark matter, dark energy and black holes
• Study of cosmogenic activation in ${}^{76}$Ge enriched germanium detectors during fabrication and transportation above ground
• Probing the independence within the dark sector in the fluid approximation
• Equivalence of Dark Energy Models: A Theoretical and Bayesian Perspective
• Quintessence and tachyon dark energy in interaction with dark matter: Observational constraints and model selection
• Late-time Cosmology without Dark Sector but with Closed String Massless Sector
• Solving an Interacting Quintessence Model with a Sound Horizon Initial Condition and its Observational Constraints
• Stability of HDE model with sign-changeable interaction in Brans-Dicke theory
• Role of Spatial Curvature in a Dark Energy Interacting Model
• Phase space analysis of an exponential model in $f(Q)$ gravity including linear dark-sector interactions
• Towards a Composite Framework for Simultaneous Exploration of New Physics in Background and Perturbed Universe
• Revisiting Holographic Dark Energy in Cyclic Cosmology
• The BINGO/ABDUS Project: Forecast for cosmological parameters from a mock Fast Radio Bursts survey
• Entropy Bounds and Holographic Dark Energy: Conflicts and Consensus
• Interacting Dark Energy and Its Implications for Unified Dark Sector
• Constraining disformal couplings with Redshift Space Distortion
• Evolution equations dynamical system of the Lemaître--Tolman--Bondi metric containing coupled dark energy
• The frozen vanilla model: Exploring dark sector interactions with delta effective theories
• The Dynamics of Inhomogeneous Dark Energy
• Interacting Models of Generalised Chaplygin Gas and Modified Chaplygin Gas with Barotropic Fluid
• Some Classes of Interacting Two-Fluid Model of the Expanding Universe
• Quintessence and false vacuum: Two sides of the same coin?
• Towards a Machine Learning Solution for Hubble Tension: Physics-Informed Neural Network (PINN) Analysis of Tsallis Holographic Dark Energy in Presence of Neutrinos
• Cosmological constraints on the big bang quantum cosmology model
• Apparent $w<-1$ and a Lower $S_8$ from Dark Axion and Dark Baryons Interactions
• Reconstruction of Tsallis Holographic Dark Energy via Modified Non-Metric Gravity: An $f(Q,C)$ Approach
• Observational constraints on the free parameters of an interacting Bose-Einstein gas as a dark-energy model
• Inflation and Linear Expansion in the Radiation Dominated era in Jordan-Brans-Dicke Cosmology
• UV-complete and stable Quintom Dark Energy models in the light of DESI DR2
• Probing Interacting Dark Sectors with upcoming Post-Reionization and Galaxy Surveys
• Forecasts on Interacting Dark Energy from 21-cm Angular Power Spectrum with BINGO and SKA observations
• Dark sector interactions in the $w\to -1$ limit: velocity locking in pure momentum exchange models
• The effects on structure of a momentum coupling between dark matter and quintessence
• Exploring the cosmological degeneracy between decaying dark matter model and viscous $\Lambda$CDM
• Cosmological dynamical systems of non-minimally coupled fluids and scalar fields
• Ricci-Cubic Holographic Dark Energy: Confronting Observations, Stability and the Cosmic Coincidence Problem
• New tests of dark sector interactions from the full-shape galaxy power spectrum
• Thermodynamics of an universe with Decaying Cold Dark Matter
• Dissecting the $H_0$ and $S_8$ tensions with Planck + BAO + supernova type Ia in multi-parameter cosmologies
• Stable bi-frequency spinor modes as Dark Matter candidates
• Revisiting Agegraphic Dark Energy in Brans-Dicke Cosmology
• Primordial gravitational waves spectrum in the interacting Bose-Einstein gas model
• Cosmological perturbations in Energy-Momentum Squared Gravity
• Testing a nonlinear solution of the Israel-Stewart theory
• The BINGO project X. Cosmological parameter constraints from HI Intensity Mapping lognormal simulations
• Crunching, Bouncing, and Cyclical Cosmologies from Dark Sector Interactions
• Self-interaction in a cosmic dark fluid: The four-kernel rheological extension of the equations of state
• Accelerating scaling solutions from dark matter particle creation
• Axion boson stars with wormhole topology
• Running Hubble Constant with the Redshift as a Marker of Evolutionary Dark Energy
• Revisiting dynamics of interacting quintessence
• Resolving the Hubble Tension in the Early Dark Energy Framework with JWST and DESI Data
• Geodesics and Bending of Light around a BTZ Black Hole Surrounded by Quintessential Matter
• Halo spin and orientation in Interacting Dark Matter Dark Energy Cosmology
• Machine learning analysis of Photometric data from the Dark Energy Survey