Effects of particle creation rate in two-fluid interacting cosmologies

Abstract

In this work, a two-fluid interacting model in a flat FLRW universe has been studied considering particle creation mechanism with a particular form of particle creation rate $\Gamma ={\Gamma }_{0}H+\frac{{\Gamma }_1}{H}$ from different aspects. Statistical analysis with a combined data set of SNe Ia (Supernovae Type Ia) and Hubble data is performed to achieve the best-fit values of the model parameters, and the model is compatible with current observational data. We also perform a dynamical analysis of this model to get an overall qualitative description of the cosmological evolution by converting the governing equations into a system of ordinary differential equations considering a proper transformation of variables. We find some non-isolated sets of critical points, among which some usually are normally hyperbolic sets of points that describe the present acceleration of the universe dominated by dark energy mimicking cosmological constant or phantom fluid. Scaling solutions are also obtained from this analysis, and they can alleviate the coincidence problem successfully. Statefinder diagnosis is also carried out for this model to compare it with the $\Lambda$CDM, and any other dark energy models by finding various statefinder parameters. Finally, the thermodynamic analysis shows that the generalized second law of thermodynamics is valid in an irreversible thermodynamic context.

27 pages, 14 captioned figures. The title is changed and thoroughly modified. The version is accepted for publication in the journal Monthly Notices of the Royal Astronomical Society

References in corpus (31)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Extended Theories of Gravity and their Cosmological and Astrophysical Applications
• Recent Advances on Inflation
• Interacting Dark Energy and Dark Matter: observational Constraints from Cosmological Parameters
• Dark sector interaction: a remedy of the tensions between CMB and LSS data
• Interacting models may be key to solve the cosmic coincidence problem
• Statefinder diagnosis for the interacting model of holographic dark energy
• Statefinder Diagnostic and w-w' Analysis for the Agegraphic Dark Energy Models without and with Interaction
• Toward a solution of the coincidence problem
• Autonomous Dynamical System Approach for $f(R)$ Gravity
• Do we have any hope of detecting scattering between dark energy and baryons through cosmology?
• Dark sector interaction and the supernova absolute magnitude tension
• Phantom behavior via cosmological creation of particles
• Statefinder diagnostic and stability of modified gravity consistent with holographic and new agegraphic dark energy
• Cosmological direct detection of dark energy: non-linear structure formation signatures of dark energy scattering with visible matter
• A cosmographic analysis of holographic dark energy models
• The resilience of the Etherington-Hubble relation
• Cosmic Behavior, Statefinder Diagnostic and $w-w^{\prime }$ Analysis for Interacting NADE model in Non-flat Universe
• Statefinder Parameters for Tachyon Dark Energy Model
• The Hubble Tension, The $M$ Crisis of Late Time $H(z)$ Deformation Models and the Reconstruction of Quintessence Lagrangians
• Exploration of interacting dynamical dark energy model with interaction term including the equation-of-state parameter: alleviation of the $H_0$ tension
• A preliminary analysis of the energy transfer between the dark sectors of the Universe
• Parameters of cosmological models and recent astronomical observations
• Two-fluid solutions of particle-creation cosmologies
• The homogeneity scale and the growth rate of cosmic structures
• IWDM: The fate of an interacting non-cold dark matter $-$ vacuum scenario
• Will there be future deceleration? A study of particle creation mechanism in non-equilibrium thermodynamics
• KiDS-1000 Cosmology: machine learning -- accelerated constraints on Interacting Dark Energy with COSMOPOWER
• Space-Time Description of Scalar Particle Creation by a Homogeneous Isotropic Gravitational Field
• Constraints On Dark Energy Models From Galaxy Clusters and Gravitational Lensing Data

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• Matter Creation Cosmologies and Accelerated Expansion