Cosmological consequences in the framework of generalized Rastall theory of gravity

Abstract

The paper deals with generalized Rastall theory of gravity and its cosmological consequences in the background of homogeneous and isotropic flat FLRW model with perfect fluid as the matter context. The model shows a non singular era (emergent scenario) at the early phase of expansion for a particular choice of the Rastall parameter. Also the model finds to be equivalent to the particle creation mechanism in Einstein gravity in the framework of non-equilibrium thermodynamics. Universal thermodynamics is briefly presented and it is found that the entropy function in Rastall theory is the usual Bekenstein entropy and there is no correction to it. Finally, a complete cosmic history starting from inflation to late time acceleration is presented for suitable choices of the Rastall parameter.

References in corpus (30)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• A Large Mass Hierarchy from a Small Extra Dimension
• First Law of Thermodynamics and Friedmann Equations of Friedmann-Robertson-Walker Universe
• General Laws of Black-Hole Dynamics
• Unified first law of black-hole dynamics and relativistic thermodynamics
• Gravitational Energy in Spherical Symmetry
• Non-equilibrium Thermodynamics of Spacetime
• Unified First Law and Thermodynamics of Apparent Horizon in FRW Universe
• Dynamic black-hole entropy
• Rastall gravity is equivalent to Einstein gravity
• Corrected Entropy-Area Relation and Modified Friedmann Equations
• Rastall Cosmology and the ΛCDM Model
• Crossing w=-1 in Gauss-Bonnet Brane World with Induced Gravity
• A Generalization to the Rastall Theory and Cosmic Eras
• Is Emergent Universe a Consequence of Particle Creation Process?
• Energy conservation for dynamical black holes
• Rastall cosmology
• Observational constraints on Rastall's cosmology
• From Brans-Dicke gravity to a geometrical scalar-tensor theory
• Quantized fields and gravitational particle creation in f(R) expanding universes
• Evolution of Spacetime arises due to the departure from Holographic Equipartition in all Lanczos-Lovelock Theories of Gravity
• A cosmographic analysis of holographic dark energy models
• Geometrical variables with direct thermodynamic significance in Lanczos-Lovelock gravity
• Universal thermodynamics in different gravity theories: Modified entropy on the horizons
• Universal thermodynamics in different gravity theories: Conditions for generalized second law of thermodynamics and thermodynamical equilibrium on the horizons
• Maximum Entropy Principle for Self-gravitating Perfect Fluid in Lovelock Gravity
• A Study of Universal Thermodynamics in Brane World Scenario
• A Study of Universal Thermodynamics in Lanczos-Lovelock gravity
• A Study of Universal Thermodynamics in Massive Gravity: Modified Entropy on the Horizons

Cited by in corpus (24)

• Thermodynamics in Rastall Gravity with Entropy Corrections
• A connection between Rastall-type and f(R, T) gravities
• Cosmic dynamics and qualitative study of Rastall model with spatial curvature
• Linear growth index of matter perturbations in Rastall gravity
• Cosmic evolution of dark energy in a generalized Rastall gravity
• Structure Formation in Generalized Rastall Gravity
• A thermodynamics revision of Rastall gravity
• Quasinormal Modes and Greybody factors of de Sitter Black holes surrounded by Quintessence in Rastall gravity
• Compact stars in Rastall gravity: hydrostatic equilibrium and radial pulsations
• Shadow, absorption and Hawking radiation of a Schwarzschild black hole surrounded by a cloud of strings in Rastall gravity
• A dynamical system representation of generalized Rastall gravity
• Cosmic evolution in f(T) gravity theory
• CFT Duals on Rotating Charged Black Holes Surrounded by Quintessence
• Dynamical systems of cosmological models for different possibilities of $G$ and ${\rho }_{\Lambda }$
• Thick brane in Rastall gravity
• Effects of Rastall parameter on perturbation of dark sectors of the Universe
• Einstein Static Universe and its Stability in Generalized Rastall Gravity
• Lemaitre-Tolman-Bondi Static Universe in Rastall-like Gravity
• Generalized Misner-Sharp energy in the generalized Rastall theory
• Wormhole solutions in generalized Rastall gravity
• Non-minimal coupling inspires the Dirac cosmological model
• Charged analog of anisotropic dark energy star in Rastall gravity
• Primordial Black Hole Formation in Rastall Gravity: Shifted Collapse Threshold and Exponential Abundance Sensitivity
• Modeling Gravastar Structure admitting Kuchowicz Spacetime in Rastall Gravity Theory