Spherical collapse and cluster number counts in dark energy models disformally coupled to dark matter

Abstract

We investigate the effects of a disformal coupling between dark energy and dark matter in the predictions of the spherical collapse and its signatures in galaxy cluster number counts. We find that the disformal coupling has no significant effects on spherical collapse at high redshifts, and in particular during matter domination epoch. However, at lower redshifts, the extrapolated linear density contrast at collapse close to redshift $z\lesssim 1$ and overdensity at virialization can be strongly suppressed by a disformal coupling between dark energy and dark matter. We also find that disformal coupling can have different imprints on cluster number counts compared with conformal coupling, such that the disformal coupling can strongly suppress the predicted number of clusters per redshift interval at $z>0.1$ while enhance the number of cluster at $z<0.05$. Using the specifications of eROSITA survey, we find that the disformal coupling between dark energy and dark matter can be tightly constrained by cluster number counts.

arXiv comment22 pages, 8 figures, 1 table, accepted for publication in Physical Review D

References in corpus (61)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Planck 2015 results. XIII. Cosmological parameters
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Dynamics of dark energy
• The Cosmological Constant and Dark Energy
• Large scale bias and the peak background split
• Cosmology and the Fate of Dilatation Symmetry
• Discovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications
• Coupled Quintessence
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Power Spectra and WMAP-Derived Parameters
• Cosmology and Fundamental Physics with the Euclid Satellite
• Transforming gravity: from derivative couplings to matter to second-order scalar-tensor theories beyond the Horndeski Lagrangian
• The Relation between Physical and Gravitational Geometry
• Interacting Dark Matter and Dark Energy
• The cosmon model for an asymptotically vanishing time-dependent cosmological ``constant''
• Dynamics of interacting dark energy
• Disformal invariance of second order tensor-scalar theories: framing the Horndeski action
• Linear and non-linear perturbations in dark energy models
• Galaxy clusters at 0.3 < z < 0.4 and the value of Ω_0
• Galaxy Cluster Abundance Evolution and Cosmological Parameters
• The X-ray cluster survey with eROSITA: forecasts for cosmology, cluster physics and primordial non-Gaussianity
• Coupled and Extended Quintessence: theoretical differences and structure formation
• Screening Modifications of Gravity through Disformally Coupled Fields
• Models of coupled dark matter to dark energy
• Structure formation in the presence of dark energy perturbations
• Structure Formation in Inhomogeneous Dark Energy Models
• DBI Galileons in the Einstein Frame: Local Gravity and Cosmology
• Coupled quintessence and the coincidence problem
• Cluster number counts dependence on dark energy inhomogeneities and coupling to dark matter
• Coupled dark matter-dark energy in light of near Universe observations
• Dark energy and the evolution of spherical overdensities
• Cosmology of a Scalar Field Coupled to Matter and an Isotropy-Violating Maxwell Field
• Non-linear Structure Formation in Cosmologies with Early Dark Energy
• Disformal Scalar Fields and the Dark Sector of the Universe
• Disformal couplings and the dark sector of the universe
• Testing coupled dark energy with large scale structure observation
• Searching for dark matter - dark energy interactions: going beyond the conformal case
• Clarifying spherical collapse in coupled dark energy cosmologies
• Phase structure of the massive chiral Gross-Neveu model from Hartree-Fock
• Mass functions in coupled Dark Energy models
• Confronting Dark Energy Models using Galaxy Cluster Number Counts
• Disformal Gravity Theories: A Jordan Frame Analysis
• Simulating Structure Formation of the Local Universe
• New interactions in the dark sector mediated by dark energy
• Towards Viable Cosmological Models of Disformal Theories of Gravity
• The spherical collapse model and cluster formation beyond the $\Lambda$ cosmology: Indications for a clustered dark energy?
• Spherical collapse of dark energy with an arbitrary sound speed
• SDSS-IV eBOSS emission-line galaxy pilot survey
• Coupled Quintessence and the Halo Mass Function
• Probing the imprints of generalized interacting dark energy on the growth of perturbations
• The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect
• Cluster mass functions in the quintessential Universe
• The clustering of galaxy clusters in cosmological models with non-Gaussian initial conditions: Predictions for future surveys
• Assisted coupled quintessence
• Spherical collapse model with non-clustering dark energy
• Spherical collapse model and cluster number counts in power law $f(T)$ gravity
• Constraining thawing and freezing models with cluster number counts
• Constraining Thawing Dark Energy using Galaxy Cluster Number Counts
• Dynamics of the universe with disformal coupling between the dark sectors
• Interacting dark energy collapse with matter components separation

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