Reduced modified Chaplygin gas cosmology

Abstract

In this paper, we study cosmologies containing the reduced modified Chaplygin gas (RMCG) fluid which is reduced from the modified Chaplygin gas $p=A\rho -B{\rho }^{-\alpha }$ for the value of $\alpha =-1/2$. In this special case, dark cosmological models can be realized for different values of model parameter $A$. We investigate the viabilities of these dark cosmological models by discussing the evolutions of cosmological quantities and using the currently available cosmic observations. It is shown that the special RMCG model ($A=0$ or $A=1$) which unifies the dark matter and dark energy should be abandoned. For $A=1/3$, RMCG which unifies the dark energy and dark radiation is the favorite model according to the objective Akaike information criteria. In the case of $A<0$, RMCG can achieve the features of the dynamical quintessence and phantom models, where the evolution of the universe is not sensitive to the variation of model parameters.

18 pages,9 figures

References in corpus (30)

• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• A test of the nature of cosmic acceleration using galaxy redshift distortions
• Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
• A Dark Energy Model Characterized by the Age of the Universe
• A Holographic Dark Energy Model from Ricci Scalar Curvature
• Confirmation of general relativity on large scales from weak lensing and galaxy velocities
• The 2dF-SDSS LRG and QSO Survey: QSO clustering and the L-z degeneracy
• Cosmology seeking friendship with sterile neutrinos
• Testing LCDM with the Growth Function δ(a): Current Constraints
• The 2dF-SDSS LRG and QSO Survey: The LRG 2-Point Correlation Function and Redshift-Space Distortions
• Testing the viability of the interacting holographic dark energy model by using combined observational constraints
• Emergent Universe with Exotic Matter
• Statefinder Diagnosis for Ricci Dark Energy
• Limits on Dark Radiation, Early Dark Energy, and Relativistic Degrees of Freedom
• Observational signatures of Jordan-Brans-Dicke theories of gravity
• A new perspective on Dark Energy modeling via Genetic Algorithms
• The growth of matter perturbations in some scalar-tensor DE models
• Bayesian Analysis and Constraints on Kinematic Models from Union SNIa
• Growth factor parametrization in curved space
• Cosmological constraints combining H(z), CMB shift and SNIa observational data
• Ruling out the Modified Chaplygin Gas Cosmologies
• Dark radiation and dark matter coupled to holographic Ricci dark energy
• Tachyon-Chaplygin inflationary universe model
• Chaplygin inflation on the brane
• Unified model of baryonic matter and dark components
• A mathematical analysis of the evolution of perturbations in a modified Chaplygin gas model
• Dark matter, dark energy, and dark radiation coupled with a transversal interaction
• Measuring growth index in a universe with sterile neutrinos
• Modified Chaplygin Gas as Scalar Field and Holographic Dark Energy Model

Cited by in corpus (11)

• In the Realm of the Hubble tension $-$ a Review of Solutions
• Higher order corrections of the extended Chaplygin gas cosmology with varying $G$ and $\Lambda$
• An evaluation of cosmological models from expansion and growth of structure measurements
• Constructing an Inflaton Potential by Mimicking Modified Chaplygin Gas
• Cosmology in Poincare gauge gravity with a pseudoscalar torsion
• Scale Factor Duality for Conformal Cyclic Cosmologies
• Cosmic constraint on the unified model of dark sectors with or without a cosmic string fluid in the varying gravitational constant theory
• Scale Factor Self-Dual Cosmological Models
• On the thermodynamics of scale factor dual Universes
• Physical Implications and Updated Observational Constraints of the PAge-like Unified Dark Fluid Model
• Background dynamics and observational constraints of flat and non-flat $\Lambda (t)$CDM models from $H(z)$ and DESI DR2 BAO measurements