Exploring the Expanding Universe and Dark Energy using the Statefinder Diagnostic

Abstract

The coming few years are likely to witness a dramatic increase in high quality Sn data as current surveys add more high redshift supernovae to their inventory and as newer and deeper supernova experiments become operational. Given the current variety in dark energy models and the expected improvement in observational data, an accurate and versatile diagnostic of dark energy is the need of the hour. This paper examines the Statefinder diagnostic in the light of the proposed SNAP satellite which is expected to observe about 2000 supernovae per year. We show that the Statefinder is versatile enough to differentiate between dark energy models as varied as the cosmological constant on the one hand, and quintessence, the Chaplygin gas and braneworld models, on the other. Using SNAP data, the Statefinder can distinguish a cosmological constant ($w=-1$) from quintessence models with $w\ge -0.9$ and Chaplygin gas models with $\kappa \le 15$ at the $3\sigma$ level if the value of $\om$ is known exactly. The Statefinder gives reasonable results even when the value of $\om$ is known to only $\sim 20$ accuracy. In this case, marginalizing over $\om$ and assuming a fiducial LCDM model allows us to rule out quintessence with $w\ge -0.85$ and the Chaplygin gas with $\kappa \le 7$ (both at $3\sigma$). These constraints can be made even tighter if we use the Statefinders in conjunction with the deceleration parameter. The Statefinder is very sensitive to the total pressure exerted by all forms of matter and radiation in the universe. It can therefore differentiate between dark energy models at moderately high redshifts of $z \lleq 10$.

21 pages, 17 figures. Minor typos corrected to agree with version published in MNRAS. Results unchanged

References in corpus (43)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• The Cosmological Constant and Dark Energy
• Cosmological Imprint of an Energy Component with General Equation of State
• 4D Gravity on a Brane in 5D Minkowski Space
• An alternative to quintessence
• Exploring the Expansion History of the Universe
• Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification
• A Dynamical Solution to the Problem of a Small Cosmological Constant and Late-time Cosmic Acceleration
• Statefinder -- a new geometrical diagnostic of dark energy
• Accelerated Universe from Gravity Leaking to Extra Dimensions
• Unification of Dark Matter and Dark Energy: the Inhomogeneous Chaplygin Gas
• Cosmology with Ultra-light Pseudo-Nambu-Goldstone Bosons
• Reconstruction of a scalar-tensor theory of gravity in an accelerating universe
• Can the Chaplygin gas be a plausible model for dark energy?
• Prospects for probing the dark energy via supernova distance measurements
• Reconstructing the Cosmic Equation of State from Supernova distances
• The Cosmological Constant Problem and Quintessence
• Parameter constraints for flat cosmologies from CMB and 2dFGRS power spectra
• Future Supernovae observations as a probe of dark energy
• Parameterization of Dark-Energy Properties: a Principal-Component Approach
• How to determine an effective potential for a variable cosmological term
• Prospects and Problems of Tachyon Matter Cosmology
• Density perturbations in an Universe dominated by the Chaplygin gas
• Are Chaplygin gases serious contenders to the dark energy throne?
• Measuring the Equation-of-state of the Universe: Pitfalls and Prospects
• Cosmological constraints from Archeops
• A new cosmological tracker solution for Quintessence
• Is the Dark Matter a Solid?
• Supernovae, CMB, and Gravitational Leakage into Extra Dimensions
• A model independent approach to the dark energy equation of state
• Non-perturbative effects of vacuum energy on the recent expansion of the universe
• New Cosmological Singularities in Braneworld Models
• High-redshift objects and the generalized Chaplygin gas
• Does Inflationary Particle Production suggest Omega_m < 1?
• Probing quintessence: reconstruction and parameter estimation from supernovae
• Non-linear bigravity and cosmic acceleration
• Determining the Equation of State of the Expanding Universe: Inverse Problem in Cosmology
• Alternatives to Quintessence Model Building
• Feasibility of Reconstructing the Quintessential Potential Using SNIa Data
• Measuring the metric: a parametrized post-Friedmanian approach to the cosmic dark energy problem
• Importance of Supernovae at z>1.5 to Probe Dark Energy
• The magnification of SN 1997ff, the farthest known Supernova

Cited by in corpus (462)

• Dynamics of dark energy
• Constraints on the redshift dependence of the dark energy potential
• Quintom Cosmology: Theoretical implications and observations
• Dark Energy
• Cosmic Growth History and Expansion History
• Reconstructing Dark Energy
• Two new diagnostics of dark energy
• Dark Matter and Dark Energy
• Reconciling dark energy models with f(R) theories
• Is there Supernova Evidence for Dark Energy Metamorphosis ?
• Holographic Dark Energy
• Constraints on holographic dark energy from type Ia supernova observations
• Reconstruction of dark energy and expansion dynamics using Gaussian processes
• Role of Modified Chaplygin Gas in Accelerated Universe
• Dark Energy from structure: a status report
• The case for dynamical dark energy revisited
• Uncorrelated Estimates of Dark Energy Evolution
• Cosmology with the Laser Interferometer Space Antenna
• Cosmic Structure Growth and Dark Energy
• Statefinder diagnostic for holographic dark energy model
• A kinematical approach to dark energy studies
• Cosmography of f(R) gravity
• Model independent evidence for dark energy evolution from Baryon Acoustic Oscillations
• Observational constraints on low redshift evolution of dark energy: How consistent are different observations?
• Phenomenological parameterization of quintessence
• A comparison of cosmological models using recent supernova data
• Statefinder diagnostic for coupled quintessence
• A Model-Independent Determination of the Expansion and Acceleration Rates of the Universe as a Function of Redshift and Constraints on Dark Energy
• Smoothing Supernova Data to Reconstruct the Expansion History of the Universe and its Age
• New generalized Chaplygin gas as a scheme for unification of dark energy and dark matter
• Cosmology with gamma-ray bursts: I. The Hubble diagram through the calibrated $E_{\mathrm{p},\mathrm{i}}$ - $E_{\mathrm{iso}}$ correlation
• An Alternative f (R, T) Gravity Theory and the Dark Energy Problem
• Statefinder Diagnosis for Ricci Dark Energy
• How many dark energy parameters?
• Statefinder parameters for interacting dark energy
• Model independent constraints on dark energy evolution from low-redshift observations
• Structure formation in the presence of dark energy perturbations
• Precision cosmology with Padé rational approximations: theoretical predictions versus observational limits
• Statefinder diagnosis for the interacting model of holographic dark energy
• Direct Determination of the Kinematics of the Universe and Properties of the Dark Energy as Functions of Redshift
• Statefinder Diagnostic and w-w' Analysis for the Agegraphic Dark Energy Models without and with Interaction
• Statefinder diagnosis in a non-flat universe and the holographic model of dark energy
• Cosmic acceleration with bulk viscosity in modified $f(Q)$ gravity
• Bulk viscous cosmology: statefinder and entropy
• Examining the evidence for dynamical dark energy
• Phantom Cosmologies
• $f(Q,T)$ gravity models with observational constraints
• LXCDM: a cosmon model solution to the cosmological coincidence problem?
• Cosmological dynamics of non-minimally coupled scalar field system and its late time cosmic relevance
• A parametric reconstruction of the deceleration parameter
• Dark Energy Models in the w - w' Plane
• Observational Constraints on Quintessence: Thawing, Tracker, and Scaling models
• Using H(z) data as a probe of the concordance model
• Interacting Dark Energy and Cosmological Equations of State
• Aetherizing Lambda: Barotropic Fluids as Dark Energy
• Model Independent Reconstruction of the Expansion History of the Universe and the Properties of Dark Energy
• Correspondence between kinematical backreaction and scalar field cosmologies - the `morphon field'
• Statefinders, higher-order energy conditions and sudden future singularities
• Observational constraints on Hubble constant and deceleration parameter in power-law cosmology
• Cosmology with gamma-ray bursts: II Cosmography challenges and cosmological scenarios for the accelerated Universe
• Statefinder parameters for quintom dark energy model
• Model independent analysis of dark energy I: Supernova fitting result
• Avoidance of Big Rip In Phantom Cosmology by Gravitational Back Reaction
• Dark energy models from a parametrization of $H$: A comprehensive analysis and observational constraints
• Phantom Friedmann Cosmologies and Higher-Order Characteristics of Expansion
• Exploring the Properties of Dark Energy Using Type Ia Supernovae and Other Datasets
• Barotropic index w-singularities in cosmology
• Fables of reconstruction: controlling bias in the dark energy equation of state
• Cosmic Jerk, Snap and Beyond
• Direct reconstruction of dark energy
• $Om$ diagnostic applied to scalar field models and slowing down of cosmic acceleration
• Cosmological constraints on Chaplygin gas dark energy from galaxy clusters X-ray and supernova data
• Cosmographic reconstruction of $f(\mathcal{T})$ cosmology
• Supernovae constraints on models of dark energy revisited
• Testing the dark energy with gravitational lensing statistics
• The Statefinder hierarchy: An extended null diagnostic for concordance cosmology
• Interacting model of new agegraphic dark energy: Cosmological evolution and statefinder diagnostic
• Reconstructing the dark energy equation of state with varying alpha
• Probing the cosmographic parameters to distinguish between dark energy and modified gravity models
• Variable Modified Chaplygin Gas and Accelerating Universe
• On the impact of $f(Q)$ gravity on the Large Scale Structure
• Updated constraints on $f(\mathcal{R})$ gravity from cosmography
• A new method optimized to use Gamma Ray Bursts as cosmic rulers
• Analysis with observational constraints in $\Lambda$-cosmology in $f(R,T)$ gravity
• Growth Index of DGP Model and Current Growth Rate Data
• A new parametrization of Hubble parameter in $f(Q)$ gravity
• Rational approximations of $f(R)$ cosmography through Padé polynomials
• Accelerating Universe in Modified Theories of Gravity
• Constraints on cosmological parameters in power-law cosmology
• Gamma-ray bursts as dark energy-matter probes in the context of the generalized Chaplygin gas model
• Statefinder diagnostic and stability of modified gravity consistent with holographic and new agegraphic dark energy
• Observational constraints on cosmology from modified Friedmann equation
• Reconstructing the dark energy equation of state with varying couplings
• Chameleon dark energy models with characteristic signatures
• Generalized Chaplygin Gas Models tested with SNIa
• Curvature driven acceleration : a utopia or a reality ?
• Observational constraints on a logarithmic scalar field dark energy model and black hole mass evolution in the Universe
• Reconstruction of the Dark Energy equation of state
• Reconstruction and constraining of the jerk parameter from OHD and SNe Ia observations
• Did the Universe loiter at high redshifts ?
• In search of the dark matter dark energy interaction: a kinematic approach
• Cosmography beyond standard candles and rulers
• On globally static and stationary cosmologies with or without a cosmological constant and the Dark Energy problem
• Dynamical Dark Energy in light of the DESI DR2 Baryonic Acoustic Oscillations Measurements
• The cosmic snap parameter in f(R) gravity
• Bayesian analysis of Friedmannless cosmologies
• Connecting early and late universe by $f(R)$ gravity
• When did cosmic acceleration start? How fast was the transition?
• Accretion of New Variable Modified Chaplygin Gas and Generalized Cosmic Chaplygin Gas onto Schwarzschild and Kerr-Newman Black holes
• Accelerating universe from gravitational leakage into extra dimensions: confrontation with SNeIa
• Barrow HDE model for Statefinder diagnostic in FLRW Universe
• Acceleration of the universe: a reconstruction of the effective equation of state
• Statefinder diagnostic for the modified polytropic Cardassian universe
• Some Aspects of Tachyon Field Cosmology
• Cosmography approach to dark energy cosmologies: new constrains using the Hubble diagrams of supernovae, quasars and gamma-ray bursts
• Constraining the Cosmology of the Phantom Brane using Distance Measures
• Late Universe expansion dominated by domain walls and dissipative dark matter
• How far is it to a sudden future singularity of pressure?
• Non-parametric reconstruction of the cosmological \textit{jerk} parameter
• Cosmographic parameters in model-independent approaches
• Measuring Dark Energy with Gamma-Ray Bursts and Other Cosmological Probes
• Stability Analysis in Tachyonic Potential Chameleon cosmology
• Statefinder hierarchy of bimetric and galileon models for concordance cosmology
• Cosmological evolution and statefinder diagnostic for new holographic dark energy model in non flat universe
• Intermediate-Generalized Chaplygin Gas inflationary universe model
• Cosmological constraints combining H(z), CMB shift and SNIa observational data
• Constraints on Cardassian Scenario from the Expansion Turnaround Redshift and the Sunyaev-Zeldovich/X-ray Data
• Accelerating Universe in Hybrid and Logarithmic Teleparallel Gravity
• What do we know about cosmography
• Interacting 3-form dark energy models: distinguishing interactions and avoiding the Little Sibling of the Big Rip
• Statefinder Diagnostic for Dilaton Dark Energy
• Cosmological aspects of a hyperbolic solution in $f(R,T)$ gravity
• Dark energy: investigation and modeling
• Classification of dark energy models in the (w_0,w_a) plane
• Crossing phantom divide in $f(Q)$ gravity
• Quintessence Behaviour of an Anisotropic Bulk Viscous Cosmological Model in Modified $f(Q)$-Gravity
• Viscous cosmology in the Weyl-type $f(Q,T)$ gravity
• The growth of linear perturbations in the DGP model
• Cosmic acceleration from modified gravity with Palatini formalism
• A reconstruction of modified holographic Ricci dark energy in $f(R,T)$ gravity
• Effects of time-varying $\beta$ in SNLS3 on constraining interacting dark energy models
• Observational Constraints and Cosmological Implications of Scalar-Tensor $f(R,T)$ Gravity
• Analysis of Generalized Ghost Version of Pilgrim Dark Energy
• Combined cosmological and solar system constraints on chameleon mechanism
• Does the Big Rip survive quantization?
• 3-loop Yang-Mills Condensate Dark Energy Model And Its Cosmological Constraints
• Role of Brans-Dicke Theory with or without self-interacting potential in cosmic acceleration
• Reconstructing K-essence
• Power-law cosmology in Weyl-type $f(Q,T)$ gravity
• An Axially Symmetric Transitioning models with Observational Constraints
• Observational constraints on a unified dark matter and dark energy model based on generalized Chaplygin gas
• Transitioning Universe with hybrid scalar field in Bianchi I space-time
• A parametrization for the growth index of linear matter perturbations
• A closer look at interacting dark energy with statefinder hierarchy and growth rate of structure
• Exploring scalar field dynamics with Gaussian processes
• Gravitationally Collapsing Shells in (2+1) Dimensions
• Constraining Dark Energy Evolution with Gravitational Lensing by Large Scale Structures
• Cosmic Behavior, Statefinder Diagnostic and $w-w^{\prime }$ Analysis for Interacting NADE model in Non-flat Universe
• A new approach to the analysis of the phase space of f(R)-gravity
• Statefinder Parameters for Interacting Phantom Energy with Dark Matter
• Statefinder Parameters for Tachyon Dark Energy Model
• Dynamical Evolution of Interacting Modified Chaplygin Gas
• Latest Observational Constraints to the Ghost Dark Energy Model by Using Markov Chain Monte Carlo Approach
• Determining the equation of state of dark energy from angular size of compact radio sources and X-ray gas mass fraction of galaxy clusters
• Cosmic age, Statefinder and $Om$ diagnostics in the decaying vacuum cosmology
• Cosmological Constraints from Hubble parameter $H(z)$ and SN Ia observations
• Chameleon field and the late time acceleration of the universe
• Confronting pNGB quintessence with data
• Redshift drift in varying speed of light cosmology
• Dynamics of a parametrized dark energy model in $f(R,T)$ gravity
• Statefinder diagnostic and $w-w^{\prime }$ analysis for interacting polytropic gas dark energy model
• Gauss-Bonnet lagrangian G ln G and cosmological exact solutions
• Dynamical systems methods and statefinder diagnostic of interacting vacuum energy models
• Observational constraints on generalized Chaplygin gas model
• Transit cosmological models with observational constraints in f(Q, T) gravity
• Can high-redshift Hubble diagrams rule out the standard model of cosmology in the context of cosmographic method?
• Gravitoelectromagnetism and other decompositions of the Riemann tensor
• Statefinder diagnostic and constraints on the Palatini f(R) gravity theories
• The growth factor of matter perturbations in an f(R) gravity
• Tsallis holographic dark energy in Fractal Universe
• Power-law solution for homogeneous and isotropic universe in $f(R,T)$ gravity
• Bulk viscous cosmology: unified dark matter
• Cosmological tests of sudden future singularities
• Holographic Dark Energy Scenario and Variable Modified Chaplygin Gas
• A transitioning universe with anisotropic dark energy
• Cosmic Mimicry: Is LCDM a Braneworld in Disguise ?
• Growth index and statefinder diagnostic of Oscillating Dark Energy
• FLRW cosmology with EDSFD parametrization
• Statefinder diagnosis and the interacting ghost model of dark energy
• Cosmological consequences and statefinder diagnosis of a non-interacting generalized Chaplygin gas in $f(R,T)$ gravity
• Statefinder diagnostic for modified Chaplygin gas cosmology in f(R,T) gravity with particle creation
• Testing the DGP model with gravitational lensing statistics
• Late-Time Viscous Cosmology in $f(R,T)$ Gravity
• Saez-Ballester gravity in Kantowski-Sachs Universe: a new reconstruction paradigm for Barrow Holographic Dark Energy
• Generalized Chaplygin gas and accelerating universe in $f(Q,T)$ gravity
• Black-Bounce in $f(T)$ Gravity
• Measurement of marked correlation functions in SDSS-III Baryon Oscillation Spectroscopic Survey using LOWZ galaxies in Data Release 12
• Statefinder diagnostic for Yang-Mills dark energy model
• Modified Chaplygin Gas Cosmology with Bulk Viscosity
• A new approach in stability analysis: case study: tachyon cosmology with non-minimally coupled scalar field-matter
• Statefinder diagnosis for holographic dark energy in the DGP braneworld
• Modelling the Accelerating Universe with $f(Q)$ Gravity: Observational Consistency
• Data Analysis of three parameter models of deceleration parameter in FRW Universe
• Revisiting the Hubble constant, spatial curvature and cosmography with time-delay and cosmic chronometer observations
• Weyl type $f(Q,T)$ gravity observational constrained cosmological model
• The constrained cosmological model in Lyra geometry
• Geometrical Constraints on Dark Energy
• Bouncing cosmology in modified gravity with higher-order Gauss-Bonnet curvature term
• Cosmology with a new f(R) gravity model in Palatini formalism
• Modeling of accelerating Universe with bulk viscous fluid in Bianchi V space-time
• Tracing the cosmic history by Gauss-Bonnet gravity
• Constraining the dark energy statefinder hierarchy in a kinematic approach
• Statefinder parameters in two dark energy models
• Anisotropic String Cosmological Models in Heckmann-Suchuking Space-Time
• Approximation of the potential in scalar field dark energy models
• Constraining the cosmological model of modified $f(Q)$ gravity: Phantom dark energy and observational insights
• Searching for the Evidence of Dynamical Dark Energy
• Generalized Chaplygin gas model: Cosmological consequences and statefinder diagnosis
• Dark energy parameterizations and their effect on dark halos
• A cosmographic analysis of the transition to acceleration using SN-Ia and BAO
• Cosmology of a generalised version of holographic dark energy in presence of bulk viscosity and its inflationary dynamics through slow roll parameters
• Dynamics of Modified Chaplygin Gas in Brane World Scenario: Phase Plane Analysis
• The Metric of the Cosmos from Luminosity and Age Data
• Bouncing cosmological models in $f(R,L_m)$ gravity
• Modified Holographic Dark Energy in Non-flat Kaluza-Klein Universe with Varying G
• Probing the Evolution of the Dark Energy Density with Future Supernova Surveys
• Reconstruction of interaction rate in Holographic dark energy model with Hubble horizon as the infrared cut-off
• Agegraphic Dark Energy Model in Non-Flat Universe: Statefinder Diagnostic and $w-w^{\prime }$ Analysis
• Two-Fluid Dark Energy Models in Bianchi Type-III Universe with Variable Deceleration Parameter
• Statefinder diagnostic for cosmology with the abnormally weighting energy hypothesis
• Dynamics of Interacting Generalized Cosmic Chaplygin gas in Brane-world scenario
• Dynamical systems of modified Gauss-Bonnet gravity: cosmological implications
• Constraining Bianchi type V universe with recent H(z) and BAO observations in Brans-Dicke theory of gravitation
• High-resolution temporal constraints on the dynamics of dark energy
• Exact Cosmology in Myrzakulov Gravity
• Model-independent study for a quintessence model of dark energy: Analysis and Observational constraints
• A constrained cosmological model in $f(R,L_m)$ gravity
• On An Interacting New Holographic Dark Energy Model: observational constraints
• Late-time acceleration with a scalar field source: Observational constraints and statefinder diagnostics
• Comparing holographic dark energy models with statefinder
• Nonparametric reconstruction of the Om diagnostic to test LCDM
• New parametrization of the dark-energy equation of state with a single parameter
• Cosmic acceleration and extra dimensions: constraints on modifications of the Friedmann equation
• Dark Energy, A Cosmological Constant, and Type Ia Supernovae
• Tsallis Holographic Dark Energy Reconsidered
• Bouncing cosmology in extended gravity and its reconstruction as dark energy model
• An interacting New Holographic Dark Energy in the framework of fractal cosmology
• Parametrization of dark energy equation of state Revisited
• Statefinder diagnosis for the extended holographic Ricci dark energy model without and with interaction
• Tsallis holographic model of dark energy: Cosmic behaviour, statefinder analysis and ${\omega }_D-{\omega }_D^{\prime }$ pair in the non-flat universe
• Analytical model of dark energy stars
• A new holographic dark energy model in Brans-Dicke theory with logarithmic scalar field
• Investigating Dark Energy Equation of State With High Redshift Hubble Diagram
• Cosmological test on viscous bulk models using Hubble Parameter measurements and type Ia Supernovae data
• Running vacuum versus Holographic dark energy: a cosmographic comparison
• Future dynamics in f(R) theories
• Corrected holographic dark energy with power-law entropy and Hubble Horizon cut-off in FRW Universe
• Thawing models in the presence of a generalized Chaplygin gas
• A study on the interacting Ricci dark energy in $f(R,T)$ gravity
• The growth of matter perturbations in the f(T) gravity
• An exact model of conformal quintessence
• Cosmography of interacting generalized QCD ghost dark energy
• Geometrical diagnostic for purely kinetic k-essence dark energy
• The Geometry of Large Causal Diamonds and the No Hair Property of Asymptotically de-Sitter Spacetimes
• The cosmological behaviour and the statefinder diagnosis for the New Tsallis agegraphic dark energy
• Polytropic and Chaplygin f(R)-gravity models
• On measuring the absolute scale of baryon acoustic oscillations
• Cosmological model with time varying deceleration parameter in $F(R,G)$ gravity
• The Abnormally Weighting Energy Hypothesis: the Missing Link between Dark Matter and Dark Energy
• Discriminating dark energy models by using the statefinder hierarchy and the growth rate of matter perturbations
• The simplest parametrization of equation of state parameter in the scalar field Universe
• Detecting relic gravitational waves in the CMB: Comparison of different methods
• Interacting Tsallis holographic dark energy: Cosmic behaviour, statefinder analysis and ${\omega }_D-{\omega }_D^{\prime }$ pair in the non-flat universe
• No evidence for dynamical dark energy in two models
• Accretion of Chaplygin gas upon black holes: Formation of faster outflowing winds
• Presence of Dark Energy and Dark Matter : Does Cosmic Acceleration signifies a Weak Gravitational collapse?
• Cosmological constraints on dynamical dark energy model in $F(Q)$ gravity
• Barrow Holographic Dark Energy Model with GO Cut-off -- An Alternative Perspective
• Limits on the Reconstruction of a Single Dark Energy Scalar Field Potential from SNe Ia Data
• Probing Dark Energy with Supernovae : Bias from the time evolution of the equation of state
• Latest data constraint of some parameterized dark energy models
• Density Evolution in the New Modified Chaplygin Gas Model
• Diagnosing Tsallis Holographic Dark Energy models with interactions
• Statefinder hierarchy exploration of the extended Ricci dark energy
• Cosmological evolution with quadratic gravity and nonideal fluids
• Viability of the $R+e^T$ cosmology
• A Complete Cosmological Scenario in Teleparallel Gravity
• Exploring the new Tsallis agegraphic dark energy with interaction through statefinder
• Statefinder diagnostic in a torsion cosmology
• Reconstructing the properties of dark energy from recent observations
• Diagnostic and Comparative Analysis of Dark Energy Models with $q(z)$ Parametrizations
• f(T) cosmology against the cosmographic method: A new study using mock and observational data
• Roles of Modified Chaplygin-Jacobi and Chaplygin-Abel Gases in FRW Universe
• Deviation from $\Lambda$CDM: Pressure Parametrization
• $\Lambda$CDM-type cosmological model and observational constraints
• Non-parametric reconstruction of cosmological observables using Gaussian Processes Regression
• Statefinder Parameters for Five-Dimensional Cosmology
• Future state of the Universe
• A statefinder luminosity distance formula in varying speed of light cosmology
• String-inspired Teleparallel Cosmology
• Bianchi Type-I Universe Models with Nonlinear Viscosity
• Statefinder Parameters for Different Dark Energy Models with Variable G Correction in Kaluza-Klein Cosmology
• R\' enyi Holographic Dark Energy in Higher Dimension Cosmology
• Cosmological reconstruction and {\it Om} diagnostic analysis of Einstein-Aether Theory
• Statefinder parameters for quantum effective Yang-Mills condensate dark energy model
• Estimating the uncorrelated dark energy evolution in the Planck era
• Effects of a time-varying color-luminosity parameter $\beta$ on the cosmological constraints of modified gravity models
• Comparing dark energy models with current observational data
• Statefinder Diagnostic for Quintessence with or without Thermal Interaction
• Properties of the exact analytic solution of the growth factor and its applications
• Interacting entropy-corrected holographic Chaplygin gas model
• Entangled states in quantum cosmology and the interpretation of Lambda
• FLRW accelerating universe with interactive dark energy
• A Dark Energy Quintessence Model of the Universe
• Expanding Universe: slowdown or speedup?
• Interacting Viscous Dark Energy in Bianchi Type-I Universe
• Direct Determinations of the Redshift Behavior of the Pressure, Energy Density, and Equation of State of the Dark Energy and the Acceleration of the Universe
• Constrained cosmological model in $f(Q,T)$ gravity with non-linear non-metricity
• Tracing cosmic evolution through Weyl-Type f(Q,T) gravity model: theoretical analysis and observational validation
• Cosmological constraints from low-redshift data
• $H(z)$ diagnostics on the nature of dark energy
• Dynamics and statefinder analysis of a class of sign-changeable interacting dark energy scenarios
• A flat FRW model with dynamical $\Lambda$ as function of matter and geometry
• Constraints on $\Lambda (t)$CDM models as holographic and agegraphic dark energy with the observational Hubble parameter data
• Holographic dark energy with time varying $c^2$ parameter
• Scalar field power-law cosmology with spatial curvature and dark energy-dark matter interaction
• Comparing teh holographic principle inspired dark energy models
• Curvature dominance DE-model in $f(R)$-gravity
• Observation constraints on scalar field cosmological model in Anisotropic universe
• Natural scaling for dark energy
• Holographic dark energy in Barrow cosmology with Granda-Oliveros IR cutoff
• Statefinder diagnostic of logarithmic entropy corrected holographic dark energy with Granda-Oliveros IR cut-off
• A Modified Generalized Chaplygin Gas as the Unified Dark Matter-Dark Energy Revisited
• A Dark Energy Model with Generalized Uncertainty Principle in the Emergent, Intermediate and Logamediate Scenarios of the Universe
• Cosmic Variation of Proton to Electron Mass Ratio with an interacting Higgs Scalar Field
• Interaction between phantom field and modified Chaplygin gas
• Probing the cosmic acceleration history and the properties of dark energy from the ESSENCE supernova data with a model independent method
• Observationally constrained accelerating cosmological model with higher power of non-metricity and squared trace
• Length-preserving biconnection gravity and its cosmological implications
• Cosmological Tests of Gravity: A Future Perspective
• Bulk viscous matter in $f(T)$ gravity: A path to cosmic acceleration
• Dissipative Unified Dark Fluid Model
• Bianchi type-V Transitioning model in Brans-Dicke theory with Observational Constraint
• $f(Q,T)$ gravity: From early to late-time cosmic acceleration
• Interaction between DBI-essence and other Dark Energies
• Renyi Holographic Dark Energy models in Teleparallel gravity
• Cosmic jerk parameter in symmetric teleparallel cosmology
• Viscous extended holographic Ricci dark energy in the framework of standard Eckart theory
• A statistical representation of the cosmological constant from finite size effects at the apparent horizon
• Modified holographic Ricci dark energy coupled to interacting relativistic and non-relativistic dark matter in the nonflat universe
• Interacting Generalised Cosmic Chaplygin gas in Loop quantum cosmology: A singularity free universe
• Late-time acceleration with steep exponential potentials
• Addressing the High-$f$ Problem in Pseudo-Nambu-Goldstone Boson Dark Energy Models with Dark Matter - Dark Energy Interaction
• Constraints on kinematic parameters at $z\ne 0$
• Israel-Stewart approach to viscous dissipative extended holographic Ricci dark energy dominated universe
• Interacting warm dark matter
• Chaotic Inflationary Universe on Brane
• Gravitational Collapse With Dark Energy And Dark Matter In Hořava-Lifshitz Gravity
• Reconstructions of $f(\mathcal{P})$ and $f(\mathcal{Q})$ gravity models from $(m,n)$-type Barrow Holographic Dark Energy: Analysis and Observational Constraints
• Scale-Free model for governing universe dynamics
• Constraining Exponential f(Q) Gravity with Cosmic Chronometers and Supernovae: A Data-Driven Analysis
• Improved parametrization of the growth index for dark energy and DGP models
• II. Non-Linear Interacting Dark Energy: Analytical Solutions and Theoretical Pathologies
• Latest Observational Constraints on Cardassian Models
• $\Lambda$-CDM type Heckmann - Suchuking model and union 2.1 compilation
• Spacetime averaging of exotic singularity universes
• Cosmology of the interacting Tsallis holographic dark energy in $f(R,T)$ gravity framework
• I. Linear Interacting Dark Energy: Analytical Solutions and Theoretical Pathologies
• Stability analysis of agegraphic dark energy in Brans-Dicke cosmology
• Generalized particle dynamics: modifying the motion of particles and branes
• Constraining Cosmological Parameters with Viscous Modified Chaplygin Gas and Generalized Cosmic Chaplygin Gas Models in Horava-Lifshitz Gravity: Utilizing Late-time Datasets
• A four-dimensional ΛCDM-type cosmological model induced from higher dimensions using a kinematical constraint
• Aspects of Some New Versions of Pilgrim Dark Energy in DGP Braneworld
• Flat Cosmology with Coupled Matter and Dark Energies
• Analysis cosmological tachyon and fermion model and observation data constraints
• Constraining Parameters for the Accelerating Universe in $f(R,{\mathcal{L}}_m)$ Gravity
• Evolution of FRW universe in variable modified Chaplygin gas model
• Interactions in the dark sector of the Universe
• Scalar field descriptions of two dark energy models
• Dynamics of Logamediate and Intermediate Scenarios in the Dark Energy Filled Universe
• Statefinder analysis of the superfluid Chaplygin gas model
• Study of Thermodynamics in Generalized Holographic and Ricci Dark Energy Models
• Cosmic Acceleration in an Extended Brans-Dicke-Higgs Theory
• Generalized Ghost Dark Energy in DGP Model
• Effects of particle creation rate in two-fluid interacting cosmologies
• How effective is new variable modified Chaplygin gas to play the role of dark energy- A dynamical system analysis in RS II Brane model
• Scalar field dark energy: Insights into cosmological evolution and black hole accretion
• New holographic Chaplygin gas model of dark energy
• What if gravity becomes really repulsive in the future?
• Validity of Thermodynamical Laws in Dark Energy Filled Universe
• Do current observations support transient acceleration of our universe?
• Cosmological parameter constraints using phenomenological symbolic expressions: On the significance of symbolic expression complexity and accuracy
• Impact of dark energy on the equation of state in light of the latest cosmological data
• Role of Tachyonic Field in Accelerating Universe in Presence of Perfect Fluid
• Stability analysis and observational constraints in scalar tensor theory
• Effect of Dynamical Cosmological Constant in presence of Modified Chaplygin Gas for Accelerating Universe
• Constraining hybrid potential scalar field cosmological model in Lyra's geometry with recent observational data
• Statefinder Diagnostic for Dark Energy Models in Bianchi I Universe
• Non-Linearly Interacting Ghost Dark Energy in Brans-Dicke Cosmology
• Accelerating behavior from dynamical system analysis parameters
• Interacting Viscous Dark Energy in Bianchi Type-III Universe
• Varying Speed of Light, Modified Chaplygin Gas and Accelerating Universe
• Statefinders and observational measurement of superenergy
• Variable $G$ Correction for Dark Energy Model in Higher Dimensional Cosmology
• Expressing the equation of state parameter in terms of the three dimensional cosmic shear
• Probing Lambda-DGP Braneworld Model
• Cosmic Acceleration in a Model of Fourth Order Gravity
• Generalized particle dynamics in anti de Sitter spaces: A source for dark energy
• Observational constraints on a Yang-Mills condensate dark energy model
• Reconstructions of Einstein-Aether Gravity from Barrow Agegraphic and New Barrow Agegraphic Dark Energy models: Examinations and Observational Limits
• Generalized Ghost Pilgrim Dark Energy Fractal Cosmology with Observational Constraint
• Diagnostic Approaches for Interacting generalized holographic Ricci Dark Energy Models
• A comprehensive analysis of Barrow holographic Chaplygin gas model reconstruction and its cosmological consequences
• Holographic Ricci dark energy and generalized second law
• Power Law and Logarithmic Ricci Dark Energy Models in Horava-Lifshitz Cosmology
• An exact solution of the observable universe in Bianchi V space-time
• Cosmological model with Gong-Zong Parametrization in $f(R,L_m)$ gravity
• Statefinder diagnosis of nearly flat and thawing non-minimal quintessence
• Observational constraints in late time for an axially symmetric transitioning model with bulk viscous fluid
• Statefinder analysis of universe models with a viscous cosmic fluid and a fluid with a non-linear equation of state
• Observational constraints in scalar tensor theory with tachyonic potential
• Power spectra in extended tachyon cosmologies
• A unification of RDE model and XCDM model
• G-corrected holographic dark energy model
• Interaction between Tachyon and Hessence (or Hantom) dark energies
• Mimicking the $\Lambda$CDM Universe through inhomogeneous space-time
• Spherical "Top-Hat" Collapse in a Modified Chaplygin Gas Dominated Universe
• Observational constraints and differential diagnosis for cosmic evolutionary models
• How does Inflation Depend Upon the Nature of Fluids Filling Up the Universe in Brane World Scenario
• A cosmic speed-trap: a gravity-independent test of cosmic acceleration using baryon acoustic oscillations
• Interacting Models of Generalised Chaplygin Gas and Modified Chaplygin Gas with Barotropic Fluid
• Density perturbation in the models reconstructed from jerk parameter
• Phenomenological aspects of dark energy dominated cosmologies
• Numerical analysis of cosmological models for accelerating Universe in Poincare gauge theory of gravity
• Variable Modified Chaplygin Gas in Anisotropic Universe with Kaluza-Klein Metric
• Galilei Group with multiple central extension, vorticity and entropy generation: "Exotic" fluid in 3+1-dimensions
• Quintessence dark energy model in non-linear $f(Q)$ theory with bulk-viscosity
• Cosmological Dynamics of Exponential Quintessence Constrained by BAO, Cosmic Chronometers, and DES-SN5YR/Pantheon+ Data
• Dark Energy Behavior from Static Equation of State in Non-Minimally Coupled Gravity with Scalar Deformation
• Rényi Holographic Dark Energy Models In Multidimensional Universe
• Stability of Differentially Rotating Disks in $f(T)$ Theory
• Polytropic $f(Q)$ cosmology and its implications for the $H_0$ tension
• Expanding Universe: Thermodynamical Aspects From Different Models
• An Alternative Approach to the Exact Solution of FRW-Type Spacetime with a Generalized Chaplygin Gas
• Accelerating Universe with binary mixture of bulk viscous fluid and dark energy
• Interacting tachyon with varying mass dark matter
• Statefinder Description in Generalized Holographic and Ricci Dark Energy Models
• On Nash theory of gravity with matter contents
• Reconstruction of Tsallis Holographic Dark Energy via Modified Non-Metric Gravity: An $f(Q,C)$ Approach
• Evolution of matter perturbations in the context of cosmic slowing down
• Phase space analysis and cosmography of a two-fluid cosmological model
• Perturbations In Some Dark Energy Models
• Observational Constraints and Geometric Diagnostics of Barboza-Alcaniz and Logarithmic Dark Energy Parametrizations
• Exploring the Viability of $f(Q,T)$ Gravity: Constraining Parameters with Cosmological Observations
• Evolution of entropic dark energy and its phantom nature
• On the Stability of Dark Energy Scalar Field Reconstruction from SNe Ia Data
• The Lambert $W$ equation of state in light of DESI BAO
• Diagnostics and future evolution analysis of the two parametric models
• A comparative study of emergent dark energy models
• On Generalized Theories of Varying Fine Structure Constant
• Determining the expansion history of the universe with the three dimensional cosmic shear
• Role of viscous fluid in FLRW model with observational constraints