Inhomogeneous Equation of State of the Universe: Phantom Era, Future Singularity and Crossing the Phantom Barrier

Abstract

The dark energy universe equation of state (EOS) with inhomogeneous,Hubble parameter dependent term is considered. The motivation to introduce such a term comes from time-dependent viscosity considerations and modifications of general relativity. For several explicit examples of such EOS it is demonstrated how the type of future singularity changes, how the phantom epoch emerges and how crossing of phantom barrier occurs. Similar cosmological regimes are considered for the universe with two interacting fluids and for universe with implicit EOS. For instance, the crossing of phantom barrier is realized in easier way, thanks to the presence of inhomogeneous term. The thermodynamical dark energy model is presented where the universe entropy may be positive even at phantom era as a result of crossing of w=-1 barrier.

LaTeX, 13 pages, refs. added, version to appear in PRD

References in corpus (12)

• Properties of singularities in (phantom) dark energy universe
• Cosmological Evolution of a Quintom Model of Dark Energy
• Gauss-Bonnet dark energy
• Can dark energy evolve to the Phantom?
• Phantom energy traversable wormholes
• Wormholes supported by a phantom energy
• Dark Energy: Vacuum Fluctuations, the Effective Phantom Phase, and Holography
• Coupled dark energy: Towards a general description of the dynamics
• The fate of (phantom) dark energy universe with string curvature corrections
• The Phantom Divide in String Gas Cosmology
• Dark energy transition between quintessence and phantom regimes - an equation of state analysis
• Patch dualities and remarks on nonstandard cosmologies

Cited by in corpus (516)

• Dynamics of dark energy
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Introduction to Modified Gravity and Gravitational Alternative for Dark Energy
• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Beyond the Cosmological Standard Model
• Unifying phantom inflation with late-time acceleration: scalar phantom-non-phantom transition model and generalized holographic dark energy
• Quintom Cosmology: Theoretical implications and observations
• Dark Energy
• Dark energy in modified Gauss-Bonnet gravity: late-time acceleration and the hierarchy problem
• Imperfect Dark Energy from Kinetic Gravity Braiding
• Finite-time future singularities in modified Gauss-Bonnet and $\mathcal{F}(R,G)$ gravity and singularity avoidance
• Observational constraints on dark energy with generalized equations of state
• Modified gravity and its reconstruction from the universe expansion history
• Future of the universe in modified gravitational theories: Approaching to the finite-time future singularity
• Probing the Coupling between Dark Components of the Universe
• Crossing the Phantom Divide: Theoretical Implications and Observational Status
• Thermodynamics in f(R,T) Theory of Gravity
• Dark Energy Anisotropic Stress and Large Scale Structure Formation
• Black holes, cosmological solutions, future singularities, and their thermodynamical properties in modified gravity theories
• Stable dark energy stars
• String-inspired Gauss-Bonnet gravity reconstructed from the universe expansion history and yielding the transition from matter dominance to dark energy
• Reconstruction of $f(T)$ gravity: Rip cosmology, finite-time future singularities and thermodynamics
• New infrared cut-off for the holographic scalar fields models of dark energy
• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• The holographic dark energy in non-flat Brans-Dicke cosmology
• Interacting holographic dark energy model in non-flat universe
• Holographic Chaplygin gas model
• Observational constraints on low redshift evolution of dark energy: How consistent are different observations?
• The Little Rip
• Interacting holographic generalized Chaplygin gas model
• The new form of the equation of state for dark energy fluid and accelerating universe
• Dark Energy: the equation of state description versus scalar-tensor or modified gravity
• Viscous Cosmology for Early- and Late-Time Universe
• Reconstructing the universe history, from inflation to acceleration, with phantom and canonical scalar fields
• Viscous Little Rip Cosmology
• $f(T)$ models with phantom divide line crossing
• Crossing of the w=-1 Barrier by D3-brane Dark Energy Model
• Thermodynamic approach to holographic dark energy and the Rényi entropy
• Dust of Dark Energy
• Linear and nonlinear interactions in the dark sector
• Holographic Ricci dark energy: Current observational constraints, quintom feature, and the reconstruction of scalar-field dark energy
• Reconstructing holographic quintessence
• The Imperfect Fluid behind Kinetic Gravity Braiding
• Bulk-Brane Interaction and Holographic Dark Energy
• Solar System experiments do not yet veto modified gravity models
• Generalized Second Law of Thermodynamics in Quintom Dominated Universe
• Does Bulk Viscosity Create a Viable Unified Dark Matter Model?
• Cosmological expansion and local physics
• Cosmological model with viscosity media (dark fluid) described by an effective equation of state
• Non-minimally coupled canonical, phantom and quintom models of holographic dark energy
• Interacting holographic dark energy model and generalized second law of thermodynamics in non-flat universe
• Thermodynamics of cosmological horizons in $f(T)$ gravity
• Cosmological Evolution of Hessence Dark Energy and Avoidance of the Big Rip
• Singular Bouncing Cosmology from Gauss-Bonnet Modified Gravity
• Dark Energy with Phantom Crossing and the $H_0$ tension
• Challenges for scaling cosmologies
• Necessary and sufficient conditions for big bangs, bounces, crunches, rips, sudden singularities, and extremality events
• Cosmological coincidence problem in interacting dark energy models
• A viability criterion for modified gravity with an extra force
• Interacting Vector-like Dark Energy, the First and Second Cosmological Coincidence Problems
• Models for Little Rip Dark Energy
• Crossing of the phantom divide in modified gravity
• Noether symmetries and analytical solutions in f(T)-cosmology: A complete study
• Thermodynamics of apparent horizon and modified Friedman equations
• Entropic cosmology for a generalized black-hole entropy
• Interacting generalized Chaplygin gas model in non-flat universe
• Cosmological Models in Energy-Momentum-Squared Gravity
• Phantom Cosmology without Big Rip Singularity
• Pseudo-rip: Cosmological models intermediate between the cosmological constant and the little rip
• Bouncing cosmology with future singularity from modified gravity
• Quantum Stability of a w < - 1 Phase of Cosmic Acceleration
• Classifying and avoiding singularities in the alternative gravity dark energy models
• The oscillating dark energy: future singularity and coincidence problem
• Phase-space analysis of interacting phantom cosmology
• Charged Black Holes in Phantom Cosmology
• Bulk viscous cosmology: statefinder and entropy
• Anisotropic Cosmological Constant and the CMB Quadrupole Anomaly
• Interacting Chaplygin gas
• Two-Field Quintom Models in the w-w' Plane
• Agegraphic dark energy as a quintessence
• Constraining Dark Energy Anisotropic Stress
• Dynamical Systems Perspective of Cosmological Finite-time Singularities in $f(R)$ Gravity and Interacting Multifluid Cosmology
• On the way from matter-dominated era to dark energy universe
• Cosmo-dynamics and dark energy with non-linear equation of state: a quadratic model
• Thermodynamics in $F(R)$ gravity with phantom crossing
• Observational constraints on viable f(R) parametrizations with geometrical and dynamical probes
• Dark goo: Bulk viscosity as an alternative to dark energy
• The phase space view of f(R) gravity
• Notes on Ghost Dark Energy
• More on QCD Ghost Dark Energy
• Cosmological viable Mimetic $f(R)$ and $f(R,T)$ theories via Noether symmetry
• Quintom Cosmology with General Potentials
• Selected topics in scalar-tensor theories and beyond
• Resembling dark energy and modified gravity with Finsler-Randers cosmology
• Modified Gauss-Bonnet gravity with Lagrange multiplier constraint as mimetic theory
• Can a matter-dominated model with constant bulk viscosity drive the accelerated expansion of the universe?
• Singular Inflationary Universe from $F(R)$ Gravity
• Smooth dynamical (de)-phantomization of a scalar field in simple cosmological models
• Exploring a matter-dominated model with bulk viscosity to drive the accelerated expansion of the Universe
• Evolution of the universe in entropic cosmologies via different formulations
• Evolving Newton's Constant, Extended Gravity Theories and SnIa Data Analysis
• Finite-time Cosmological Singularities and the Possible Fate of the Universe
• Bouncing cosmological solutions from f(R,T) gravity
• Modified gravity and the stability of de Sitter space
• General analytic formulae for attractor solutions of scalar-field dark energy models and their multi-field generalizations
• Finite-time singularities in f(R, T) gravity and the effect of conformal anomaly
• Phantom evolution in power-law potentials
• Correspondence of $F(R)$ Gravity Singularities in Jordan and Einstein Frames
• No compelling cosmological models come out of magnetic universes which are based in nonlinear electrodynamics
• A divergence free parametrization of deceleration parameter for scalar field dark energy
• Some aspects of generalized modified gravity models
• The Holographic Model of Dark Energy and Thermodynamics of Non-Flat Accelerated Expanding Universe
• Dynamical system analysis of generalized energy-momentum-squared gravity
• A Note on Crossing the Phantom Divide in Hybrid Dark Energy Model
• Comparison of Approaches to Quantum Correction of Black Hole Thermodynamics
• Unifying inflation with dark energy in modified F(R) Horava-Lifshitz gravity
• Modified equation of state, scalar field, and bulk viscosity in Friedmann universe
• Critical comments on the paper "Crossing $\omega =-1$ by a single scalar field on a Dvali-Gabadadze-Porrati brane" by H Zhang and Z-H Zhu [Phys.Rev.D75,023510(2007)]
• Crossing $w=-1$ by a single scalar on a Dvali-Gabadadze-Porrati brane
• Reconstruction of Hessence Dark Energy and the Latest Type Ia Supernovae Gold Dataset
• Holographic Chaplygin DGP cosmologies
• Reconstruction of general scalar-field dark energy models
• Two scalar field cosmology: Conservation laws and exact solutions
• Accelerating Cosmology and Phase Structure of F(R) Gravity with Lagrange Multiplier Constraint: Mimetic Approach
• Imperfect Dark Matter
• Covariantizing the interaction between dark energy and dark matter
• Inflation in a viscous fluid model
• Dark energy model with higher derivative of Hubble parameter
• The little sibling of the big rip singularity
• Thermodynamics in $f(R)$ gravity in the Palatini formalism
• F(R) cosmology in presence of a phantom fluid and its scalar-tensor counterpart:towards a unified precision model of the universe evolution
• Theoretical Limits on the Equation-of-State Parameter of Phantom Cosmology
• Beyond the perfect fluid hypothesis for dark energy equation of state
• Dynamics of interacting quintessence
• Cosmological perturbations in mimetic matter model
• Phase Space Analysis of the Accelerating Multi-fluid Universe
• Cosmological Fluids with Logarithmic Equation of State
• Observational constraints on interacting Tsallis holographic dark energy models
• Is the future universe singular: Dark Matter versus modified gravity?
• Scalar dark energy models mimicking $\Lambda$CDM with arbitrary future evolution
• Interacting Dark Energy with Inhomogeneous Equation of State
• Viscous Dark Cosmology with Account of Quantum Effects
• Phantom dark energy with varying-mass dark matter particles: acceleration and cosmic coincidence problem
• Modified first-order Horava-Lifshitz gravity: Hamiltonian analysis of the general theory and accelerating FRW cosmology in power-law F(R) model
• Running coupling: Does the coupling between dark energy and dark matter change sign during the cosmological evolution?
• General form of entropy on the horizon of the universe in entropic cosmology
• Turbulence and Little Rip Cosmology
• Non-minimal quintessence and phantom with nearly flat potentials
• Kinetic k-essence ghost dark energy model
• Quintom dark energy models with nearly flat potentials
• Wormholes minimally violating the null energy condition
• Schwarzschild black hole and the generalized second law in phantom-dominated universe
• A quantitative analysis of singular inflation with scalar-tensor and modified gravity
• Supernova constraints on decaying vacuum cosmology
• Energy conditions in generalized teleparallel gravity models
• Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
• Interacting Holographic Viscous Dark Energy Model
• Inflationary universe in terms of a van der Waals viscous fluid
• On Phantom Thermodynamics
• Thermodynamic Behavior of particular $f(R,T)$ Gravity Models
• Cardy-Verlinde formula in FRW Universe with inhomogeneous generalized fluid and dynamical entropy bounds near the future singularity
• Bounce solutions in viscous fluid cosmology
• Stationary vs. singular points in an accelerating FRW cosmology derived from six-dimensional Einstein-Gauss-Bonnet gravity
• Non-adiabatic-like accelerated expansion of the late universe in entropic cosmology
• Crossing of the w=-1 barrier in viscous modified gravity
• Dynamics of Quintom and Hessence Energies in Loop Quantum Cosmology
• Cosmology in modified $f(R,T)$-gravity
• Particle vs. future event horizon in interacting holographic dark energy model
• Holographic Ricci dark energy: Interacting model and cosmological constraints
• How to Distinguish Dark Energy and Modified Gravity?
• An analysis of the $H_0$ tension problem in a universe with a viscous dark fluid
• Cheng-Weyl Vector Field and its Cosmological Application
• Testing the equation of state for viscous dark energy
• Characteristic Properties of Two Different Viscous Cosmology Models for the Future Universe
• A General Sudden Cosmological Singularity
• Interacting Energy Components and Observational $H(z)$ Data
• Dark Energy Coupled with Dark Matter in Viscous Fluid Cosmology
• Quasi-local variables in spherical symmetry: numerical applications to dark matter and dark energy sources
• Super-acceleration in non-minimal derivative coupling model
• A New Approach to Cosmological Bulk Viscosity
• Astrophysical Configurations with Background Cosmology: Probing Dark Energy at Astrophysical Scales
• Cosmological constraints of phantom dark energy models
• UV stable, Lorentz-violating dark energy with transient phantom era
• Modelling and testing the equation of state for (Early) dark energy
• Dissipative generalized Chaplygin gas as phantom dark energy
• Tachyon Reconstruction of Ghost Dark Energy
• Interaction between dark energy and dark matter: observational constraints from OHD, BAO, CMB and SNe Ia
• Cosmologies with General Non-Canonical Scalar Field
• General Bulk-Viscous Solutions and Estimates of Bulk Viscosity in the Cosmic Fluid
• Appeasing the Phantom Menace?
• Scalar Field Dark Energy Perturbations and their Scale Dependence
• Reconstruction of quintessence field for the THDE with swampland correspondence in $f(R,T)$ gravity
• Quintessence Behaviour of an Anisotropic Bulk Viscous Cosmological Model in Modified $f(Q)$-Gravity
• Eddington-Born-Infeld cosmology: a cosmographic approach, a tale of doomsdays and the fate of bound structures
• Entropic cosmology in a dissipative universe
• Multi-horizon spherically symmetric spacetimes with several scales of vacuum energy
• Dynamically avoiding fine-tuning the cosmological constant: the "Relaxed Universe"
• Screening of cosmological constant for De Sitter Universe in non-local gravity, phantom-divide crossing and finite-time future singularities
• Scalar phantom energy as a cosmological dynamical system
• Multiple Lambda cosmology: dark fluid with time-dependent equation of state as classical analog of cosmological landscape
• Accelerating dark energy models with anisotropic fluid in Bianchi type-$V{I}_0$ space-time
• Casimir Effects Near the Big Rip Singularity in Viscous Cosmology
• Dynamics of coupled phantom and tachyon fields
• Can cosmological observations uniquely determine the nature of dark energy ?
• Non-minimal Maxwell-Modified Gauss-Bonnet Cosmologies: Inflation and Dark Energy
• Universe Models with Negative Bulk Viscosity
• Crossing of the w=-1 Barrier in Two-Fluid Viscous Modified Gravity
• Observational constraints on cosmological future singularities
• Higher derivative corrections of $f(R)$ gravity with varying equation of state in the case of variable $G$ and $\Lambda$
• Spherical inhomogeneous solutions of Einstein and scalar-tensor gravity: a map of the land
• Preventing eternality in phantom inflation
• Modified Eddington-inspired-Born-Infeld Gravity with a Trace Term
• Cosmological perturbations in an effective and genuinely phantom dark energy Universe
• Gauss-Bonnet Chameleon Mechanism of Dark Energy
• A Study of Finite-time Singularities of Loop Quantum Cosmology Interacting Multifluids
• Cosmological Hysteresis and the Cyclic Universe
• Quasi-Rip: A New Type of Rip Model without Cosmic Doomsday
• Deformed Matter Bounce with Dark Energy Epoch
• Confronting the relaxation mechanism for a large cosmological constant with observations
• Phase space analysis and singularity classification for linearly interacting dark energy models
• Dark viscous fluid described by a unified equation of state in cosmology
• Confronting dark energy models mimicking $\Lambda$CDM epoch with observational constraints: future cosmological perturbations decay or future Rip?
• Singularity of spherically-symmetric spacetime in quintessence/phantom dark energy universe
• A FRW Dark Fluid with a Non-Linear Inhomogeneous Equation of State
• Viscous Fluid Holographic Bounce
• Constraining $f(Q,L_m)$ gravity with bulk viscosity
• Holographic Dark Energy from Fluid/Gravity Duality Constraint by Cosmological Observations
• Phantom singularities and their quantum fate: general relativity and beyond
• Cosmological singularities in Born-Infeld determinantal gravity
• Constraints on Singular Evolution from Gravitational Baryogenesis
• Reconstruction of modified gravity with ghost dark energy models
• Thermodynamic properties of modified gravity theories
• Bulk viscous cosmology: unified dark matter
• Friedmann-Lemaitre Cosmologies via Roulettes and Other Analytic Methods
• Dark Energy Fluid with Time-Dependent, Inhomogeneous Equation of State
• The quantum realm of the "Little Sibling" of the Big Rip singularity
• Scale Factor Dependent Equations of State for Curvature Inspired Dark Energy, Phantom Barrier and Late Cosmic Acceleration
• The solution of the cosmological constant problem from the inhomogeneous equation of state - a hint from modified gravity?
• Generalized second law of thermodynamics in modified FRW cosmology with corrected entropy-area relation
• Statefinder diagnosis and the interacting ghost model of dark energy
• Chameleonic Generalized Brans--Dicke model and late-time acceleration
• Reconstructing the potentials for the quintessence and tachyon dark energy, from the holographic principle
• Reconstruction of Inflation Models
• The Relaxed Universe: towards solving the cosmological constant problem dynamically from an effective action functional of gravity
• Crossing the phantom divide with dissipative normal matter in the Israel-Stewart-Hiscock formalism
• Inhomogeneous viscous fluids in FRW universe and finite-future time singularities
• An equation of state for purely kinetic k-essence inspired by cosmic topological defects
• Tradeoff between Smoother and Sooner "Little Rip"
• Viscous Generalized Chaplygin Gas Interacting with f(R,T) gravity
• Recent advances in cosmological singularities
• Dark energy in some integrable and nonintegrable FRW cosmological models
• Searching for dynamical black holes in various theories of gravity
• Cosmological Time Crystal: Cyclic Universe with a small $\Lambda$ in a toy model approach
• Analysing dissipative effects in the $\Lambda$CDM model
• Challenging matter creation models in the phantom divide
• Dark Viscous Fluid coupled with Dark Matter and future singularity
• QCD ghost reconstruction of f(T) gravity in flat FRW universe
• Bulk viscous cosmological model in $f(R,T)$ theory of gravity
• Constraining viscous dark energy models with the latest cosmological data
• Nonlinear bulk viscosity and the stability of accelerated expansion in FRW spacetime
• Pre-Inflationary Spacetime in String Cosmology
• Ghost dark energy in $f(R)$ model of gravity
• Interacting Holographic Extended Chaplygin Gas and Phantom Cosmology in the Light of BICEP2
• Thermodynamically allowed phantom cosmology with viscous fluid
• Cosmic microwave background radiation temperature in a dissipative universe
• f(R) Cosmology from q-Theory
• Exact solutions, finite time singularities and non-singular universe models from a variety of $\Lambda (t)$ cosmologies
• Cosmology of a generalised version of holographic dark energy in presence of bulk viscosity and its inflationary dynamics through slow roll parameters
• The Classical and Loop Quantum Cosmology Phase Space of Interacting Dark Energy and Superfluid Dark Matter
• Interacting Two-Fluid Viscous Dark Energy Models In Non-Flat Universe
• On the phantom barrier crossing and the bounds on the speed of sound in non-minimal derivative coupling theories
• Bounce Universe Induced by an Inhomogeneous Dark Fluid Coupled with Dark Matter
• Inhomogeneous viscous dark fluid coupled with dark matter in the FRW universe
• Cosmological Evolution Across Phantom Crossing and the Nature of the Horizon
• New holographic dark energy model with non-linear interaction
• Phantom Dark Ghost in Einstein-Cartan Gravity
• Remarks on cosmological bulk viscosity in different epochs
• Compact Star in General $F(R)$ Gravity: Inevitable Degeneracy Problem and Non-Integer Power Correction
• On An Interacting New Holographic Dark Energy Model: observational constraints
• Classical and quantum cosmology of the little rip abrupt event
• Notes on interacting holographic dark energy model in a closed universe
• Effects of modified theories of gravity on neutrino pair annihilation energy deposition near neutron stars
• Quintom evolution in power-law potentials
• Scrutinizing Various Phenomenological Interactions In The Context Of Holographic Ricci Dark Energy Models
• An interacting New Holographic Dark Energy in the framework of fractal cosmology
• Interacting closed string tachyon with modified Chaplygin gas and its stability
• Fixed points and FLRW cosmologies: Flat case
• Thermodynamics of Spinor Quintom
• Inflation in Terms of a Viscous van der Waals Coupled Fluid
• Interacting modified holographic Ricci dark energy model and statefinder diagnosis in flat universe
• A Unified Model of Phantom Energy and Dark Matter
• Effective Dark Energy Models and Dark Energy Models with Bounce in frames of $F(T)$ Gravity
• Archimedean-type force in a cosmic dark fluid: I. Exact solutions for the late-time accelerated expansion
• Viscous Coupled Fluids in Inflationary Cosmology
• Extended $\Lambda$CDM model
• Dilaton Coupled Quintessence Model in the $\omega -{\omega }^{\prime }$ Plane
• Born-Infeld Type Phantom Model in the $\omega -{\omega }^{\prime }$ Plane
• Holographic dark energy with the sign-changeable interaction term
• Traversable holographic dark energy wormholes constrained by astronomical observations
• Singular deformations of nearly $R^2$ inflation potentials
• Rip/singularity free cosmology models with bulk viscosity
• Exponential Cardassian Universe
• Reconstructing QCD ghost $f(R,T)$ models
• Future dynamics in f(R) theories
• Loop Quantum Cosmology Corrected Gauss-Bonnet Singular Cosmology
• Non-Riemannian Cosmology: The role of Shear Hypermomentum
• Dissipative Universe-Inflation with Soft Singularity
• Revisiting the classical electron model in general relativity
• A note on the relations between thermodynamics, energy definitions and Friedmann equations
• Archimedean-type force in a cosmic dark fluid: II. Qualitative and numerical study of a multistage Universe expansion
• Oscillating Universe from inhomogeneous EoS and coupled dark energy
• Extended $\Lambda$CDM model and viscous dark energy: A Bayesian analysis
• Doomsdays in a modified theory of gravity: A classical and a quantum approach
• Neutrino spin oscillations in conformally gravity coupling models and quintessence surrounding a black hole
• Inhomogeneous viscous fluids for inflation
• Viscous universe with cosmological constant
• Interpretation of $f(\mathsf{R},\mathsf{T})$ gravity in terms of a conserved effective fluid
• Imperfect fluid cosmological model in modified gravity
• Cosmological perturbations for imperfect fluids
• Cosmic expansion with matter creation and bulk viscosity
• Phantom universe from CPT symmetric QFT
• Linking little rip cosmologies with regular early universes
• Viscosity-Induced Crossing of the Phantom Divide in the Dark Cosmic Fluid
• Inflationary Universe with a Viscous Fluid Avoiding Self-Reproduction
• Inhomogeneous viscous fluids in FRW universe
• Crossing the phantom divide line in the Holographic dark energy model in a closed universe
• The Jeans Instability in Presence of Viscous Effects
• Cosmological evolution of thermal relic particles in $f(R)$ gravity
• Reconstructing Dark Energy Potentials From Parameterized Deceleration Parameters
• New mechanism to cross the phantom divide
• Brane-like singularities with no brane
• Inflation and Bounce from Classical and Loop Quantum Cosmology Imperfect Fluids
• More on the holographic Ricci dark energy model: smoothing Rips through interaction effects?
• Viscous Modified Gravity on a RS Brane Embedded in AdS5
• Generalized Logarithmic Equation of State in Classical and Loop Quantum Cosmology Dark Energy-Dark Matter Coupled Systems
• Evolution of perturbations in distinct classes of canonical scalar field models of dark energy
• On Bianchi type III Cosmological Model with Quadratic EoS in Lyra Geometry
• Cosmological Models Coupled with Dark Matter in a Dissipative Universe
• Finite time future singularities in the interacting dark sector
• Neutrino pair annihilation ($\nu \bar{\nu }\to e^{-}{e}^{+}$) in the presence of quintessence surrounding a black hole
• The Most Probable Size of the Universe
• Quantisation of the holographic Ricci dark energy model
• Structure formation in $f(R)$ gravity: A distinguishing probe between the dark energy and modified gravity
• QCD ghost dark energy cannot (even roughly) explain the main features of the accepted cosmological paradigm
• Quasi-Rip and Pseudo-Rip Universes Induced by the Fluid Inhomogeneous Equation of State
• Crossing the Phantom divide line in the Chaplygin gas model
• Constraining H0 in General Dark Energy Models from Sunyaev-Zeldovich/X-ray Technique and Complementary Probes
• Viscous dark fluid
• Vainshtein Screening in Bimetric Cosmology
• A new Parametrization for Bulk Viscosity Cosmology as Extension of the $\Lambda$CDM Model
• Interacting Dark Energy: Dynamical System Analysis
• Periodic Cosmological Evolutions of Equation of State for Dark Energy
• Evolution of thermodynamic quantities on cosmological horizon in $\Lambda (t)$ model
• The Integrated Sachs-Wolfe Effect in Time Varying Vacuum Model
• Horizon thermodynamics in holographic cosmological models with a power-law term
• The effect of thermal radiation on singularities in the dark universe
• Singularity formation in asymptotically safe cosmology with inhomogeneous equation of state
• Singular Accelerated Evolution in Massive $F(R)$ Bigravity
• Multi-fluid cosmology in Einstein gravity: analytical solutions
• Little Rip and Pseudo Rip Phenomena from Coupled Dark Energy
• On finite time singularities in scalar field dark energy models based in the RS-II Braneworld
• Gravitational Waves in the Presence of Viscosity
• Interaction between scalar field and ideal fluid with inhomogeneous equation of state
• On Isotropic Turbulence in the Dark Fluid Universe
• Dynamical systems of cosmological models for different possibilities of $G$ and ${\rho }_{\Lambda }$
• Type V singularities in non-standard cosmological backgrounds
• The Reconstruction of Constant Jerk Parameter with $f(R,T)$ Gravity in Bianchi-I spacetime
• Study of a viscous $\Lambda$WDM model: Near equilibrium condition, entropy production, and cosmological constraints
• Interacting realization of cosmological singularities with variable vacuum energy
• Inhomogeneous Dark Fluid and Dark Matter, Leading to a Bounce Cosmology
• Tsallis holographic dark energy with power law ansatz approach
• Rip Brane Cosmology from 4d Inhomogeneous Dark Fluid Universe
• Reconstructing the interaction between the dark matter and holographic dark energy
• Hamiltonian formalism in Friedmann cosmology and its quantization
• Perfect Fluid Cosmological Universes: One equation of state and the most general solution
• Interacting holographic dark energy models: A general approach
• Parametrizing the transition to the phantom epoch with Supernovae Ia and Standard Rulers
• Thermal fluctuations in viscous cosmology
• Observation constraints on scalar field cosmological model in Anisotropic universe
• $f(Q,T)$ gravity: From early to late-time cosmic acceleration
• Born-Infeld gravity with a Brans-Dicke scalar
• Inverse problem - reconstruction of dark energy models
• Multiple $\Lambda$CDM cosmology with string landscape features and future singularities
• Gravitational Origin of Phantom Dark Energy and Late Cosmic Acceleration
• Energy stored on a cosmological horizon and its thermodynamic fluctuations in holographic equipartition law
• The little rip in classical and quantum $f(R)$ cosmology
• Two-Fluid Viscous Modified Gravity on a RS Brane
• Fluid inflation with brane correction
• Entropy production due to adiabatic particle creation in a holographic dissipative cosmology
• Viscous Accelerating Universe with Non-linear and Logarithmic Equation of State Fluid
• First-order formalism for the quintom model of dark energy
• Viscous extended holographic Ricci dark energy in the framework of standard Eckart theory
• Ghost dark energy with sign-changeable interaction term
• Inhomogeneous fluids for warm inflation
• Israel-Stewart approach to viscous dissipative extended holographic Ricci dark energy dominated universe
• An extension of the cosmological standard model with a bounded Hubble expansion rate
• Viscous Dark Energy and Phantom Field in An Anisotropic Universe
• Cosmological model with variable vacuum pressure
• Knot Universes in Bianchi Type I Cosmology
• Testing a dissipative kinetic k-essence model
• An interacting holographic dark energy model within an induced gravity brane
• Cosmic acceleration and ekpyrotic bounce with Chameleon field
• Cosmological singularities in $f(T,\varphi )$ gravity
• Holographic representation of the unified early and late universe via a viscous dark fluid
• Reconstructing FHDE with Scalar and Gauge Fields
• Evolution of dissipative and non-dissipative universes in holographic cosmological models with a power-law term
• Transition between phantom and non-phantom phases with time dependent cosmological constant and Cardy-Verlinde formula
• Universal procedure to cure future singularities of dark energy models
• Dark Energy and Cosmological Horizon Thermal Effects
• Phantom energy from graded algebras
• Phantom cosmologies from QCD ghost dark energy
• Reconstruction from scalar-tensor theory and the inhomogeneous equation of state in f(T) Gravity
• Emulating dark energy models with known equation of state via the created cold dark matter scenario
• Deformation of the quintom cosmological model and its consequences
• Stability analysis of agegraphic dark energy in Brans-Dicke cosmology
• On solutions of loop quantum cosmology
• I. Linear Interacting Dark Energy: Analytical Solutions and Theoretical Pathologies
• Reconstruction of the equation of state for the cyclic universes in homogeneous and isotropic cosmology
• Energy conditions for Inhomogeneous EOS and its Thermodynamics analysis with the resolution on finite time future singularity problems
• Probing Ricci dark energy model with perturbations by using WMAP seven-year cosmic microwave background measurements, BAO and Type Ia supernovae
• Non-minimal coupling of the phantom field and cosmic acceleration
• Modified gravity in a viscous and non-isotropic background
• Thermal relics in cosmology with bulk viscosity
• Constraining the Lattice Fluid Dark Energy from SNe Ia, BAO and OHD
• Cosmological observations in non-local $F(R)$ cosmology
• "Expansion" around the vacuum: how far can we go from Lambda?
• On Friedmann-Lema\^ıtre-Robertson-Walker cosmologies in non-standard gravity
• New perspectives on future rip scenarios with holographic dark energy
• Dynamics of classes of barotropic fluids in spatially curved FRW spacetimes
• Tachyon field inspired dark energy and supernovae constraints
• Horizon thermodynamics and cosmological equations: A holographic-like connection between thermostatistical quantities on a cosmological horizon and in the bulk
• Self-gravitating clouds of generalized Chaplygin and modified anti-Chaplygin Gases
• Specially Coupled Dark Energy in the Oscillating FRW Cosmology
• A non-singular early-time viscous cosmological model
• Cosmological model based on both holographic-like connection and Padmanabhan's holographic equipartition law
• Reconstruction of DBI-essence dark energy with f(R) gravity and its effect on black hole and wormhole mass accretion
• Phantom Divide Crossing with General Non-minimal Kinetic Coupling
• Crossing of the Cosmological Constant Boundary - an Equation of State Description
• Little Rip, Pseudo Rip and bounce cosmology with generalized equation of state in non-standard backgrounds
• Non-Minimal Cosmological Model in Modified Yang--Mills Theory
• Evolution of Dark Energy Perturbations for Slotheon Field and Power Spectrum
• Eternal vs singular observers in interacting dark energy-dark matter models
• Phenomenological models of Universe with varying $G$ and $\Lambda$
• Type V singularities with inhomogeneous equations of state
• Thermodynamic analysis for Non-linear system (Van-der-Waals EOS) with viscous cosmology
• Quantum effects from particle production on background evolution and Cardy-Verlinde formula in f(R) gravity
• Form invariance symmetry generates a large set of FRW cosmologies
• Equation of state description of the dark energy transition between quintessence and phantom regimes
• A varying Dark Energy effective speed of sound parameter in the phantom Universe
• Dark energy with $w\to -1$: Asymptotic $\Lambda$ versus pseudo-$\Lambda$
• Superfluid Rayleigh-Plesset extension of FLRW cosmology
• Dynamical dark energy models with singularities in the view of the forthcoming results of the growth observations
• Hawking radiation and thermodynamics of dynamical black holes in phantom dominated universe
• Fermionic and scalar fields as sources of interacting dark matter-dark energy
• Thermodynamics and energy condition analysis for Van-Der-Waals EOS without viscous cosmology
• Singular behavior of the dark universe under the effect of thermal radiation in curved spacetime
• The oscillating dark energy and cosmological Casimir effect
• Rips and regular future scenario with Holographic Dark Energy: A comprehensive look
• Geometrical constraints on dark energy models
• WIMP dark matter in bulk viscous non-standard cosmologies
• Thermodynamics of a Non-canonical $f(\bar{R},\bar{T})$ gravity
• The Cosmological Models with Jump Discontinuities
• On the necessity of phantom fields for solving the horizon problem in scalar cosmologies
• Flows into de Sitter space from anisotropic initial conditions: An effective field theory approach
• Non linear equation of state and effective phantom divide in brane models
• Bouncing solutions from generalized EoS
• Scalar field vs hydrodynamic models in the homogeneous isotropic cosmology
• FIMP Dark Matter in bulk viscous non-standard cosmologies
• A causal viscous cosmology without singularities
• Wormholes in a viscous universe
• Potentials of Coupled Quintessence Based on a Dilaton
• Observational constraints in late time for an axially symmetric transitioning model with bulk viscous fluid
• Viscous coupled fluids in terms of a log-corrected equation of state
• Holographic description of unified early and late universe in viscous mimetic gravity
• Statefinder analysis of universe models with a viscous cosmic fluid and a fluid with a non-linear equation of state
• On the Field Theoretical Description of an Alternative Model to Generalized Chaplygin Gas and its Thermodynamic Behaviour
• Cosmological singularities in non-canonical models of dark energy
• Qualitative behaviour of higher-curvature gravity with boundary terms i.e the f(Q) gravity models by dynamical system analysis
• The Osgood Criterion and Finite-Time Cosmological Singularities
• Phenomenological modification of horizon temperature
• A Matter with an effective EoS interacting with a tachynic field in an accelerating Universe
• Rip Cosmology via Inhomogeneous Fluid
• Holographic description of the dissipative model of universe with curvature
• Phase space analysis of a FRW cosmology in the Maxwell$-$Cattaneo approach
• Finite scale factor and future singularities
• Coupled fluids model in FRW space-time
• Cosmology in $R^2$-gravity: Effects of a Higher Derivative Scalar Condensate Background
• A Dark Energy Model interacting with Dark Matter described by an effective EoS
• Reconstructing f(R) model from Holographic DE: Using the observational evidence
• Holographic description of the dissipative unified dark fluid model with axion field
• Parameterization and Reconstruction of Quasi Static Universe
• A new approach to modified-gravity models
• Phase space of multi-fluid universe in $F(T)$-gravity and some enhancements for the oscillating interaction model
• Generic autonomous system approach to interacting dark energy models
• Cosmological Singularities in Brane Gravity
• Exploring the cosmological degeneracy between decaying dark matter model and viscous $\Lambda$CDM
• Late time attractors of some varying Chaplygin gas cosmological models
• On rips and cosmological singularities in a universe merging with baby universes
• Anisotropic Segre [(11)(1,1)] dark energy following a particular equation of state
• Revisiting Barrow's Graduated Inflationary Universe: A Warm perspective
• Study of Some Chaotic Inflationary Models in f(R) Gravity
• A cyclic cosmological model based on the f(ρ) modified theory of gravity
• 4+1 D homogeneous anisotropic string cosmological models with dilaton and anti-symmetric matter
• Starobinsky model with f-essence
• Evolution of entropic dark energy and its phantom nature
• Fermionic quantum cosmology as a framework for resolving type IV singularities
• Cosmological Implications of Thermodynamic Split Conjecture
• Role of viscous fluid in FLRW model with observational constraints
• Emergence of the Gambier equation in cosmology
• Evolution and thermodynamics of new holographic dark energy with bulk viscosity in modified $f(R,T)$ gravity
• Modeling the quantum evolution of the universe through classical matter
• Conformally flat travelling plane wave solutions of Einstein equations
• $\Lambda$CDM-like models with future singularities
• Scalar perturbation of the viscosity dark fluid cosmological model
• Dark Energy Density and IS (Israel-Stewart) Bulk Viscosity Model