Will there be future deceleration? A study of particle creation mechanism in non-equilibrium thermodynamics

Abstract

The paper deals with non-equilibrium thermodynamics based on adiabatic particle creation mechanism with the motivation of considering it as an alternative choice to explain the recent observed accelerating phase of the universe. Using Friedmann equations, it is shown that the deceleration parameter ($q$) can be obtained from the knowledge of the particle production rate ($\Gamma$). Motivated from thermodynamical point of view, cosmological solutions are evaluated for the particle creation rates in three cosmic phases, namely, inflation, matter dominated and present late time acceleration. The deceleration parameter ($q$) is expressed as a function of the redshift parameter ($z$), and its variation is presented graphically. Also, statefinder analysis has been presented graphically in three different phases of the universe. Finally, two non-interacting fluids with different particle creation rates are considered as cosmic substratum, and deceleration parameter ($q$) is evaluated. It is examined whether more than one transition of $q$ is possible or not by graphical representations.

12 pages, 12 figures, More discussions added, references updated

References in corpus (16)

• Dynamics of dark energy
• Cosmologies with Energy Exchange
• Theoretical Models of Dark Energy
• Bulk Viscous Cosmology
• Toward a solution of the coincidence problem
• The oscillating dark energy: future singularity and coincidence problem
• Scalar-field-dominated cosmology with a transient accelerating phase
• The generalized second law of thermodynamics in Horava-Lifshitz cosmology
• Is Emergent Universe a Consequence of Particle Creation Process?
• Irreversible thermodynamic description of interacting dark energy - dark matter cosmological models
• Generalized second law of thermodynamics for FRW cosmology with logarithmic correction
• Confronting Dark Energy Models using Galaxy Cluster Number Counts
• Bayesian Analysis and Constraints on Kinematic Models from Union SNIa
• Cosmic accelerated expansion and the entropy corrected holographic dark energy
• Dynamics and Constraints of the Massive Gravitons Dark Matter Flat Cosmologies
• Irreversible thermodynamics of dark energy on entropy-corrected apparent horizon

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• Dynamical systems analysis of a cosmological model with interacting Umami Chaplygin fluid in adiabatic particle creation mechanism: Some bouncing features