Structure formation in a Dirac-Milne universe: comparison with the standard cosmological model

Abstract

The presence of complex hierarchical gravitational structures is one of the main features of the observed universe. Here, structure formation is studied both for the standard ($\Lambda \mathrm{CDM}$) cosmological model and for the Dirac-Milne universe, a matter-antimatter symmetric universe that was {\gm recently} proposed as an alternative "coasting" cosmological scenario. One-dimensional numerical simulations reveal the analogies and differences between the two models. Although structure formation is faster in the Dirac-Milne universe, both models predict that it ends shortly before the present epoch, at cosmological redshift $z\approx 3$ for the Dirac-Milne cosmology, and at $z\approx 0.5$ for the $\Lambda \mathrm{CDM}$ universe. The present results suggest that the matter power spectrum observed by the Sloan Digital Sky Survey might be entirely due to the nonlinear evolution of matter and antimatter domains of relatively small initial dimensions, of the order of a few tens of parsecs comoving at cosmological redshift $z=1080$.

arXiv commentTo be published in Physical Review D

References in corpus (24)

• Cosmological Hydrodynamics with Adaptive Mesh Refinement: a new high resolution code called RAMSES
• The 3D power spectrum of galaxies from the SDSS
• The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch
• Cosmological implications of baryon acoustic oscillation (BAO) measurements
• The Expansion of the Universe is Faster than Expected
• Calibration of the Tip of the Red Giant Branch (TRGB)
• A measurement of large-scale peculiar velocities of clusters of galaxies: results and cosmological implications
• Type Ia Supernova Distances at z > 1.5 from the Hubble Space Telescope Multi-Cycle Treasury Programs: The Early Expansion Rate
• Evidence for anisotropy of cosmic acceleration
• Marginal evidence for cosmic acceleration from Type Ia supernovae
• Introducing the Dirac-Milne universe
• A Convenient Set of Comoving Cosmological Variables and Their Application
• Is cosmic acceleration proven by local cosmological probes?
• Asymptotic behavior of a stratified perturbation in a three dimensional expanding Universe
• Cosmological structure formation with negative mass
• Gravity, antimatter and the Dirac-Milne universe
• Influence of Expansion on Hierarchical Structure
• Cosmology under Milne's shadow
• Non-linear gravitational clustering of cold matter in an expanding universe: indications from 1D toy models
• Cosmology in One Dimension: Fractal Geometry, Power Spectra and Correlation
• Exponents of non-linear clustering in scale-free one dimensional cosmological simulations
• Ewald Sums for One Dimension
• Cosmology in One Dimension: Vlasov Dynamics
• Cosmology in One Dimension: The Two Component Universe

Cited by in corpus (4)

• AEther as an Inevitable Consequence of Quantum Gravity
• Modified cosmology through Kaniadakis entropy
• MOND-like behavior in the Dirac-Milne universe -- Flat rotation curves and mass/velocity relations in galaxies and clusters
• Is the cosmological constant an eigenvalue?