Constraints on the redshift dependence of the dark energy potential

Abstract

We develop a formalism to characterize the redshift evolution of the dark energy potential. Our formalism makes use of quantities similar to the Horizon-flow parameters in inflation and is general enough that can deal with multiscalar quintessence scenarios, exotic matter components, and higher order curvature corrections to General Relativity. We show how the shape of the dark energy potential can be recovered non parametrically using this formalism and we present approximations analogous to the ones relevant to slow-roll inflation. Since presently available data do not allow a non-parametric and exact reconstruction of the potential, we consider a general parametric description. This reconstruction can also be used in other approaches followed in the literature (e.g., the reconstruction of the redshift evolution of the dark energy equation of state w(z)). Using observations of passively evolving galaxies and supernova data we derive constraints on the dark energy potential shape in the redshift range 0.1 < z < 1.8. Our findings show that at the 1sigma level the potential is consistent with being constant, although at the same level of confidence variations cannot be excluded with current data. We forecast constraints achievable with future data from the Atacama Cosmology Telescope.

submitted to PRD

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• Reconstruction of an Observationally Constrained $f(R,T)$ gravity model
• Constraints on field flows of quintessence dark energy
• No-go guide for the Hubble tension: late-time or local-scale new physics
• Constraining the local variance of $H_0$ from directional analyses
• A tachyonic scalar field with mutually interacting components
• Cosmological Effects of Scalar-Photon Couplings: Dark Energy and Varying-alpha Models
• Hubble constant and sound horizon from the late-time Universe
• New parametrization of the dark-energy equation of state with a single parameter
• Tsallis Holographic Dark Energy Reconsidered
• On the use of galaxies as clocks and the universal expansion
• Testing f(R) gravity models with quasar X-ray and UV fluxes
• Quintessential power-law cosmology: dark energy equation of state
• Testing the (generalized) Chaplygin gas model with the Lookback time-Redshift data
• Does the second law hold at cosmic scales?
• Estimation of Cosmological Parameters, Stability Analysis and Energy Conditions in Viable Modified Gravity
• Nonparametric reconstruction of the Om diagnostic to test LCDM
• Cosmological implications of the transition from the false vacuum to the true vacuum state
• Coupled Multi Scalar Field Dark Energy
• Testing the cosmic opacity at higher redshifts: implication from quasars with available UV and X-ray observations
• Reconstruction of interaction rate in Holographic dark energy
• Modeling cosmic acceleration with a generalized varying deceleration parameter
• Constraints on accelerating universe using ESSENCE and Gold supernovae data combined with other cosmological probes
• Kinematic Constraints on Spatial Curvature from Supernovae Ia and Cosmic Chronometers
• Constraints on dark energy from the Lyα forest baryon acoustic oscillations measurement of the redshift 2.3 Hubble parameter
• Running vacuum in Brans-Dicke theory: a possible cure for the ${\sigma }_8$ and $H_0$ tensions
• Exploring Universe acceleration through observational constraints via Hubble parameter reconstruction
• Observational constraints on a generalized equation of state model
• Cosmological constraints from Radial Baryon Acoustic Oscillation measurements and Observational Hubble data
• Constraining f(R) models with cosmic chronometers and the HII galaxy Hubble diagram
• Running vacuum versus Holographic dark energy: a cosmographic comparison
• Null test for cosmic curvature using Gaussian process
• Measuring the Hubble Constant with cosmic chronometers: a machine learning approach
• Networks of cosmological histories, crossing of the phantom divide line and potentials with cusps
• Cosmological models in scalar tensor theories of gravity and observations: a class of general solutions
• Rip/singularity free cosmology models with bulk viscosity
• Corrected holographic dark energy with power-law entropy and Hubble Horizon cut-off in FRW Universe
• Quantum mechanical look at the radioactive-like decay of metastable dark energy
• Cosmological constraints from large-scale structure growth rate measurements
• Geometrical Diagnostics for Generalized Chaplygin Gas
• Traversable holographic dark energy wormholes constrained by astronomical observations
• Constraint on Cosmological Model with Matter Creation Using Complementary Astronomical Observations
• Measuring Hubble constant in an anisotropic extension of $\Lambda$CDM model
• Observational constraints on the oscillating dark energy cosmologies
• Spatial Curvature in $f(R)$ Gravity
• Fitting oscillating string gas cosmology to supernova data
• Bayesian correction of $H(z)$ data uncertainties
• Backreaction and FRW consistency conditions
• Reduced modified Chaplygin gas cosmology
• Growth of Matter Perturbations in the Bi-Galileons Field Model
• Does accelerating universe indicates Brans-Dicke theory
• Time and distance constraints on accelerating cosmological models
• Observational constraints on the generalized $\alpha$ attractor model
• Cosmological bounds on oscillating dark energy models
• Self-interacting holographic dark energy
• Spatial Ricci scalar dark energy model
• Effective equation of state in modified gravity and observational constraints
• Decay of multiple dark matter particles to dark radiation in different epochs does not alleviate the Hubble tension
• Oscillating dark energy in light of the latest observations and its impact on the Hubble tension
• Constraints on the exponential $f(R)$ model from latest Hubble parameter measurements
• Constraining minimally extended varying speed of light by cosmological chronometers
• A non-parametric test of variability of Type Ia supernovae luminosity and CDDR
• Transit cosmological models in Myrzakulov F(R,T) gravity theory
• Prospect for cosmological parameter estimation using future Hubble parameter measurements
• Cosmology with decaying cosmological constant -- exact solutions and model testing
• Dynamics and chaos in the unified scalar field Cosmology
• Dark energy from cosmological fluids obeying a Shan-Chen non-ideal equation of state
• The $S_8$ Tension in Light of Updated Redshift-Space Distortion Data and PAge Approximation
• The simplest parametrization of equation of state parameter in the scalar field Universe
• Extended $\Lambda$CDM model and viscous dark energy: A Bayesian analysis
• Constraints on the DGP Universe Using Observational Hubble parameter
• Revisiting the dynamics of interacting vector-like dark energy
• Probing the nature of cosmic acceleration
• Measuring cosmic curvature with non-CMB observations
• Redshift remapping and cosmic acceleration in dark-matter-dominated cosmological models
• Cosmological constraints on the generalized holographic dark energy
• Cosmological Constraints on the Coupling Model from Observational Hubble Parameter and Baryon Acoustic Oscillation Measurements
• Constraints on running vacuum model with $H(z)$ and $f{\sigma }_8$
• Model-independent cosmological inference after the DESI DR2 data with improved inverse distance ladder
• Reconstructing the properties of dark energy from recent observations
• Test of conformal gravity with astrophysical observations
• Viscous universe with cosmological constant
• Testing dark matter warmness and quantity via the reduced relativistic gas model
• The unified history of the viscous accelerating universe and phase transitions
• Viability of the $R+e^T$ cosmology
• The effect of different observational data on the constraints of cosmological parameters
• Constraints from the CMB temperature and other common observational data-sets on variable dark energy density models
• Cosmology-informed neural networks to solve the background dynamics of the Universe
• Cosmological constraints on polytropic gas model
• A new parametrization of dark energy equation of state leading to double exponential potential
• Observational constraints on unified dark matter including Hubble parameter data
• On the effect of the degeneracy between w_0 and w_a
• From model dynamics to oscillating dark energy parameterisation
• Updating constraints on phantom crossing $f(T)$ gravity
• Breaking through the high redshift bottleneck of Observational Hubble parameter Data: The Sandage-Loeb signal Scheme
• Dark energy reconstructions combining BAO data with galaxy clusters and intermediate redshift catalogs
• Analyzing H(z) Data using Two-point Diagnostics
• Hubble tension in a nonminimally coupled curvature-matter gravity model
• Reconstruction of late-time cosmology using Principal Component Analysis
• Observational constraints on dark energy cosmological model parameters
• FLRW Cosmology in Metric-Affine $F(R,Q)$ Gravity
• Measuring the Homogeneity of the Universe Using Polarization Drift
• Determining $H_0$ with the latest HII galaxy measurements
• Improved cosmological constraints on the curvature and equation of state of dark energy
• Constraints on the generalized tachyon field models from latest observational data
• Dark matter interacts with variable vacuum energy
• Growth of structures using redshift space distortion in $f(T)$ Cosmology
• Testing the Copernican Principle with Hubble Parameter
• Cosmic Growth in $f(T)$ Teleparallel Gravity
• On detecting interactions in the dark sector with H(z) data
• Thawing Versus. Tracker Behaviour: Observational Evidence
• Holographic dark energy described at the Hubble length
• Observational constrains on the DGP brane-world model with a Gauss-Bonnet term in the bulk
• Dynamics and constraints of the dissipative Liouville cosmology
• Cosmological Consequences of Exponential Gravity in Palatini Formalism
• Cosmological Constraints on the DGP braneworld model with Gamma-ray bursts
• The Age-Redshift Relationship of Old Passive Galaxies
• A model independent measure of the large scale curvature of the Universe
• Constraints on Power Law and Exponential models in $f(Q)$ Gravity
• Instability in interacting dark sector: An appropriate Holographic Ricci dark energy model
• The Age-Redshift Relation For Luminous Red Galaxies Obtained From the Full Spectrum Fitting and Its Cosmological Implications
• FLRW accelerating universe with interactive dark energy
• The tension on the cosmological parameters from different observational data
• A quantitative criteria for the coincidence problem
• Nonparametric reconstruction of dynamical dark energy via observational Hubble parameter data
• Cosmological model with linear equation of state parameter in f(R, Lm) gravity
• Peering beyond the horizon with standard sirens and redshift drift
• Constraints on Cosmological Models from Quasars Calibrated with Type Ia Supernova by a Gaussian Process
• Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects
• In search of an interaction in the dark sector through Gaussian Process and ANN approaches
• A Two-point Diagnostic for the HII Galaxy Hubble Diagram
• Cosmological constraints from low-redshift data
• Observational Evidence for Negative-Energy Dust in Late-Times Cosmology
• Cosmological Tests of $f(R,G,T)$ Dark Energy Model in FRW Universe
• Exact Solutions and Accelerating Universe in Modified Brans-Dicke Theories
• Probing the course of cosmic expansion with a combination of observational data
• Testing f(R)-gravity models with DESI DR2 2025-BAO and other cosmological data
• Reconciling the cosmic age problem in the R_h=ct Universe
• Model-independent estimation of the cosmography parameters using cosmic chronometers
• An effective theory of accelerated expansion
• Dark Energy Nature in Logarithmic $f(R,T)$ Cosmology
• An FLRW interacting dark energy model of the Universe
• Constraints on Dark Energy Models Using Late Universe Probes
• Measuring the speed of light with updated Hubble diagram of high-redshift standard candles
• Cosmological constraints on holographic dark energy models under the energy conditions
• Parametrizations of Dark Energy Models in the Background of General Non-canonical Scalar Field in $D$-dimensional Fractal Universe
• Tracing cosmic evolution through Weyl-Type f(Q,T) gravity model: theoretical analysis and observational validation
• Is dark energy evolving?
• Cosmological zoo -- accelerating models with dark energy
• Constraints on Cubic and $f(P)$ Gravity from the Cosmic Chronometers, BAO & CMB datasets : Use of Machine Learning Algorithms
• Cosmological constraints of Palatini $f(\mathcal{R})$ gravity
• A unified TDiff invariant field theory for the dark sector
• Current lookback time-redshift bounds on dark energy
• Equivalence between Scalar-Tensor theories and $f(R)$-gravity: From the action to Cosmological Perturbations
• Search for the $f(R,T)$ gravity functional form via gaussian processes
• Reconstruction of cosmological matter perturbations in Modified Gravity
• FRW dark energy cosmological model with hybrid expansion law
• Myrzakulov $F(T,Q)$ gravity: cosmological implications and constraints
• Cosmology With A Dark Refraction Index
• Cosmic expansion history from SNe Ia data via information field theory -- the charm code
• Constraints on $\Lambda (t)$CDM models as holographic and agegraphic dark energy with the observational Hubble parameter data
• Screening Mechanism and Late-time Cosmology: Role of a Chameleon-Brans-Dicke Scalar Field
• f(R) Gravity in an Ellipsoidal Universe
• Supernovae as probes of cosmic parameters: estimating the bias from under-dense lines of sight
• Joint Constraints on the Hubble Constant, Spatial Curvature, and Sound Horizon from the Late-time Universe with Cosmography
• Prospects in Constraining the Dark Energy Potential
• Natural scaling for dark energy
• Cosmic Variation of Proton to Electron Mass Ratio with an interacting Higgs Scalar Field
• Evolution of shifted cosmological parameter and shifted dust matter in a two-phase tachyonic field universe
• An Anisotropic Model for the Universe
• Deviation From ΛCDM With Cosmic Strings Networks
• Light mass galileon and late time acceleration of the Universe
• Standardizing the Gamma-ray burst as a standard candle and applying to the cosmological probes: constraints on the two-component dark energy model
• The Reconstruction of Constant Jerk Parameter with $f(R,T)$ Gravity in Bianchi-I spacetime
• Scalar field power-law cosmology with spatial curvature and dark energy-dark matter interaction
• Probing the cosmic acceleration history and the properties of dark energy from the ESSENCE supernova data with a model independent method
• Analytical Gaussian Process Cosmography: Unveiling Insights into Matter-Energy Density Parameter at Present
• $f(T,B)$ Gravity in the late Universe in the context of local measurements
• The $k$-essence scalar field in the context of Supernova Ia Observations
• A Reconstruction of Quintessence Dark Energy
• Nonbaryonic dark matter and scalar field coupled with a transversal interaction plus decoupled radiation
• The effective Lagrangian of dark energy from observations
• Dynamical system analysis of LRS-BI Universe with f(Q) gravity theory
• Cosmological Constraints on Scalar Field Dark Matter
• Constraints on $\Lambda (t)$-cosmology with power law interacting dark sectors
• Do we need wavelets in the late Universe?
• A generalized $\Lambda$CDM model with parameterized Hubble parameter in particle creation, viscous and $f(R)$ model framework
• Observational Constraints on the Dark Energy with a Quadratic Equation of State
• Can the Universe decelerate in the future?
• Observationally constrained accelerating cosmological model with higher power of non-metricity and squared trace
• Constraints on the Transition Redshift using Hubble Phase Space Portrait
• Null tests with Gaussian Process
• Bianchi type-V Transitioning model in Brans-Dicke theory with Observational Constraint
• Renyi Holographic Dark Energy models in Teleparallel gravity
• Constraints on power law cosmology from cosmic chronometer, standard ruler, and standard candle data
• Implications of JLA data for $k-$essence model of dark energy with given equation of state
• Decaying dark energy in light of the latest cosmological dataset
• Bulk viscous matter in $f(T)$ gravity: A path to cosmic acceleration
• On the robustness of the H$\beta$ Lick index as a cosmic clock in passive early-type galaxies
• Quiescent luminous red galaxies (LRGs) as cosmic chronometers: on the significance of mass and environmental dependence
• DBI Galileon and Late time acceleration of the universe
• Investigating the effect of cosmic opacity on standard candles
• A model independent constraint on the temporal evolution of the speed of light
• Breaking the baryon-dark matter degeneracy in a model-independent way through the Sunyaev-Zeldovich effect
• Robustness of $H_0$ determination at intermediate redshifts
• Backreaction as an alternative to dark energy and modified gravity
• Physical condition for the slowing down of cosmic acceleration
• Propagation and Fluxes of Ultra High Energy Cosmic Rays in f(R) Gravity Theory
• The interacting generalized Ricci dark energy model in non-flat universe
• Cosmological models with running cosmological term and decaying dark matter
• Late-time acceleration driven by shift-symmetric Galileon in the presence of Torsion
• Testing backreaction effects with observational Hubble parameter data
• The Logotropic Dark Fluid: Observational and Thermodynamic Constraints
• Stability, dark energy parameterization and swampland aspect of Bianchi Type-$V{I}_h$ cosmological models with f(R, T)-gravity
• Direct reconstruction of dynamical dark energy from observational Hubble parameter data
• Reference level of the vacuum energy density of the Universe and astrophysical data
• Revisit of constraints on dark energy with Hubble parameter measurements including future redshift drift observations
• Testing Modified Gravity theory (MOG) with Type Ia Supernovae, Cosmic Chronometers and Baryon Acoustic Oscillations
• A Reliable Calibration of HII Galaxies Hubble Diagram with Cosmic Chronometers and Artificial Neural Network
• Generalizing thawing dark energy models: the standard vis-à-vis model independent diagnostics
• Dodging the dark matter degeneracy while determining the dynamics of dark energy
• Constraints on Cosmological Models from Hubble Parameters Measurements
• Holographic field theory models of dark energy in interaction with dark matter
• Age problem in holographic dark energy
• The accelerated scaling attractor solution of the interacting agegraphic dark energy in Brans-Dicke theory
• A Non-parametric Reconstruction of the Hubble Parameter $H(z)$ Based on Radial Basis Function Neural Networks
• Potentialities of Hubble parameter and expansion rate function data to alleviate Hubble tension
• Probing the H0 Tension with Holographic Dark Energy in Unimodular Gravity: Insights from DESI DR2
• Distinguish the $f(T)$ model from $\Lambda$CDM model with Gravitational Wave observations
• Square-Root parametrization of dark energy in $f(Q)$ cosmology
• Observational constraints and stability in viscous $f(T,\mathcal{T})$ gravity
• Modified Equations of State for Dark Energy and Observational Limitations
• Thermodynamic Constraints on the Dark Sector
• Test of Artificial Neural Networks in Likelihood-free Cosmological Constraints: A Comparison of IMNN and DAE
• Simultaneous effect of Modified Gravity and Primordial Non-Gaussianity in Large Scale Structure Observations
• The parameter space of Cubic Galileon models for cosmic acceleration
• Reconstructing equation of state of dark energy with principal component analysis
• The tension of cosmological magnetic fields as a contribution to dark energy
• Is there a dynamical tendency in H0 with late time measurements?
• Latest Observational Constraints on Cardassian Models
• Braneworld cosmology in the sourced-Taub background
• Deep Learning and genetic algorithms for cosmological Bayesian inference speed-up
• Model-independent determination of cosmic curvature based on Padé approximation
• Posing Constraints on the Free Parameters of a New Model of Dark Energy EoS : Responses Through Cosmological Behaviours
• Testing LTB Void Models Without the Cosmic Microwave Background or Large Scale Structure: New Constraints from Galaxy Ages
• Dark energy with a shift-symmetric scalar field: obstacles, loophole hunting and dead ends
• The interaction of extended Bose-Einstein condensate dark matter with viscous $f(T,B)$ gravity
• Determining $H_0$ using a model-independent method
• Tensions in cosmology: a discussion of statistical tools to determine inconsistencies
• Astrophysical Tests of Kinematical Conformal Cosmology in Fourth-Order Conformal Weyl Gravity
• Effects of anisotropy in an anisotropic extension of $w$CDM model
• Comment on "Constraining the smoothness parameter and dark energy using observational H(z) data"
• Stable $f(Q)$ gravity model through non-trivial connection
• Reconstruction of the interaction term between dark matter and dark energy using SNe Ia
• Thawing k-essence dark energy in the PAge space
• Cosmological joint analysis with cosmic growth and expansion rate
• Beyond $\Lambda$CDM: Exploring a Dynamical Cosmological Constant Framework Consistent with Late-Time Observations
• Late-time dynamics of dark energy EoS in symmetric teleparallel gravity
• CCDM Model with Spatial Curvature and The Breaking of "Dark Degeneracy"
• Observational constraints on the growth index parameters in $f(Q)$ gravity
• Examining the validity of the minimal varying speed of light model through cosmological observations: relaxing the null curvature constraint
• X-ray surface brightness observations of galaxy clusters, cosmic opacity and the limits on the matter density parameter
• Dynamics of dark energy in a scalar-vector-torsion theory
• Constraints on the $\Lambda$CDM model with redshift tomography
• A possible role for the merger of clusters/voids in the cosmological expansion
• Observational constraint on dynamical evolution of dark energy
• What if the universe expands linearly? A local general relativity to solve the "zero active mass" problem
• Old Dark Energy
• Statistical analysis with cosmic-expansion-rate measurements and two-point diagnostics
• Degeneracy between nonadiabatic dark energy models and $\Lambda$CDM: ISW effect and the cross correlation of CMB with galaxy clustering data
• Investigating the $w$CDM Model with Latest DESI BAO Observations
• Probing interaction in the dark sector
• Testing $f(T)$ Gravity with Cosmological Observations: Confronting the Hubble Tension and Implications for the Late-Time Universe
• Interacting Barrow Holographic Dark Energy in Non-flat Universe
• A More Accurate and Competitive Estimative of $H_0$ in Intermediate Redshifts
• Constrained transit cosmological models in $f(R,L_m,T)$-gravity
• Forecasting cosmological constraints from age of high-z galaxies
• Cancelling out systematic uncertainties
• Unveiling the Universe with Emerging Cosmological Probes
• Analysis cosmological tachyon and fermion model and observation data constraints
• Cosmic constraint on the unified model of dark sectors with or without a cosmic string fluid in the varying gravitational constant theory
• Constraints on smoothness parameter and dark energy using observational $H(z)$ data
• Cosmic Acceleration in an Extended Brans-Dicke-Higgs Theory
• Cosmological Dynamics in Interacting Scalar-Torsion f(T,$\varphi$) Gravity: Investigating Energy and Momentum Couplings
• Investigating the cosmic distance duality relation with gamma-ray bursts
• Observational constraints on Tsallis holographic dark energy with Ricci horizon cutoff
• Beyond the Standard Model of Physics with Astronomical Observations
• Constraints on Spatial Curvature and Dark Energy Dynamics in the $w$CDM Model from DESI DR1 and DR2
• Comparing Dark Energy models with Hubble versus Growth Rate data
• Tachyon field non-minimally coupled to massive neutrino matter
• Endowing $\mathbf{\Lambda }$ with a dynamic nature: constraints in a spatially curved Universe
• A comprehensive data-driven odyssey to explore the equation of state of dark energy
• Improved Cosmological Parameter Constraints from CMB and H(z) Data
• Faster Bayesian inference with neural network bundles and new results for $f(R)$ models
• Phase-space analysis of torsion-coupled dilatonic ghost condensate
• Cosmological constraints on $R^2$-corrected Appleby-Battye model
• An Interacting Scenario for Dark Energy in Bianchi Type-I Universe
• A Nearly Model-Independent Characterization of Dark Energy Properties as a Function of Redshift
• Cosmological acceleration from a gas of strings
• Studies on dark energy evolution
• Holographic dark energy at the Ricci scale
• Gamma-Ray Bursts Calibrated from the Observational $H(z)$ Data in Artificial Neural Network Framework
• Tsallis holographic dark energy model with event horizon cutoff in modified gravity
• Dynamical system analysis in multiscalar-torsion cosmology
• Reconstruction of the scalar field potential in nonmetricity gravity through Gaussian processes
• Precision Cosmology from X-ray AGN clustering
• Barrow holographic dark energy interacting model in the presence of radiation and matter
• Can the coincidence problem be solved by a cosmological model of coupled dark energy and dark matter?
• Complementary cosmological tests of RSII brane models
• What Prevents Resolving the Hubble Tension through Late-Time Expansion Modifications?
• Eternal vs singular observers in interacting dark energy-dark matter models
• Reconstruction of the interaction term between dark matter and dark energy using SNe Ia, BAO, CMB, H(z) and X-ray gas mass fraction
• Quintessence scalar field and cosmological constant: Dynamics of a multi-component dark energy model
• Observational constraints using Bayesian statistics and Deep Learning in $f(Q)$ gravity
• Fine Tuning Problem of the Cosmological Constant in a Generalized Randall-Sundrum Model
• High precision measurement of cosmic curvature: from gravitational waves and cosmic chronometer
• Structure Formation in Dark Matter Particle Production Cosmology
• When Dark Matter Heats Up: A Model-Independent Search for Non-Cold Behavior
• Updated reduced CMB data and constraints on cosmological parameters
• Effect of Peak Absolute Magnitude of Type Ia Supernovae and Sound Horizon Values on Hubble Tension using DESI results
• Implications of Dynamical Dark Energy in the expansion of the Universe and the Structure Formation
• The constraint ability of Hubble parameter by gravitational wave standard sirens on cosmological parameters
• Lyra's cosmology of homogeneous and isotropic universe in Brans-Dicke theory
• Dynamical Oscillations in Dark Energy: Joint Constraints on the $w_{sin}$CDM Model from DESI, OHD, and Supernova Samples
• Novel Cosmological Joint Constraints in Multidimensional Observables Space with Redshift-free Inferences
• Geometrical constraints on dark energy models
• Beyond Fisher Forecasting for Cosmology
• Optimal strategies : theoretical approaches to the parametrization of the dark energy equation of state
• Exploring the deviation of cosmological constant by a generalized pressure dark energy model
• Constraining the swiss-cheese IR-fixed point cosmology with cosmic expansion
• Constraining Chaplygin models using diffuse supernova neutrino background
• Observational constraints on cosmological parameters in the Bianchi type III Universe with f(R,T) gravity theory
• Quintessence and tachyon dark energy in interaction with dark matter: Observational constraints and model selection
• Chaplygin Gas of Tachyon Nature Imposed by Symmetry and Constrained via H(z) Data
• Is Dark Energy Changing? Probing the Universe's Expansion with present and future astronomical probes
• Anisotropic cosmology in Bumblebee gravity theory
• Equivalence of Dark Energy Models: A Theoretical and Bayesian Perspective
• Stringent constraint on the CCC+TL cosmology with $H(z)$ Measurements
• Cosmic expansion beyond $\Lambda$CDM: Investigating power-law and logarithmic corrections
• Accelerating Universe in Higher Dimensional Space Time : an alternative approach
• Late Time Phenomena in $f(T,\mathcal{T})$ Gravity Framework: Role of $H_0$ Priors
• ParamANN: A Neural Network to Estimate Cosmological Parameters for $\Lambda$CDM Universe Using Hubble Measurements
• Bayesian inference methodology for Primordial Power Spectrum reconstructions from Large Scale Structure
• Emergent Universe as an interaction in the dark sector
• Model-independent reconstruction of the cosmological scale factor as a function of lookback time
• Degeneracy and Discreteness in Cosmological Model Fitting
• The general expression for $f(T)$ in a charged cylindrical spacetime with diverse dimensions
• Observational constraints on thawing quintessence scalar field model
• Interacting Models of Generalised Chaplygin Gas and Modified Chaplygin Gas with Barotropic Fluid
• A pressure parametric dark energy model
• Barboza-Alcaniz Equation of State Parametrization : Constraining the Parameters in Different Gravity Theories
• Testing Exponential $f(R)$ Gravity with CMB, DESI-DR2, and Supernova Data
• Evolution of gravity-dark energy coupled expanding universe
• Dynamical Dark Energy Signatures from a New Transition $Om(z)$ Parametrization in Flat FLRW Cosmology
• New $H(z)$ measurement at Redshift = 0.12 with DESI Data Release 1
• Topological implications of inhomogeneity
• Testing the Constancy of Type Ia Supernova Luminosities with Gaussian Process
• Matter production effects and interacting scenario within a reconstructed mimetic cosmology for late times
• Mimicking the $\Lambda$CDM Universe through inhomogeneous space-time
• Constraining Axially Symmetric Bianchi Type I Model with Self-Consistent Recombination History and Observables
• Reconstructing cosmic evolution with a density parametrization
• On Direct Estimation of Density Parameters and Hubble Constant for $\Lambda$CDM Universe using Hubble Measurements
• Non-adiabatic instability in coupled dark sectors
• Unimodular Theory of Gravity in Light of the Latest Cosmological Data
• Photo-z optimization for measurements of the BAO radial direction
• Estimating Cosmological Parameters and Reconstructing Hubble Constant with Artificial Neural Networks: A Test with covariance matrix and mock H(z)
• A Jacobian generalization of the pseudo Nambu-Goldstone bosons potential
• Quintessence dark energy model in non-linear $f(Q)$ theory with bulk-viscosity
• Cosmic Acceleration Caused by the Extra-Dimensional Evolution in a Generalized Randall-Sundrum Model
• From Nonparametric Distance Reconstruction to Testing the Etherington Relation and Cosmic Curvature Using 2D and 3D BAO Measurements
• Confronting Einstein Yang Mills Higgs Dark Energy in light of observations
• Inference of cosmological models with principal component analysis
• Low-redshift tests of Newtonian cosmologies with a time-varying gravitational constant
• Finding Possibility of Dynamical Dark Energy with Hubble Parameters
• Can dark energy explain a high growth index?
• The Constraint of H0from Galaxy clusters and Hubble parameter data
• Observational Constraints on Chaplygin Gas Models in Non-Minimally Coupled Power Law $f(Q)$ Gravity with Quasars
• The energy conditions and model selection in the local Universe
• Dynamics of a spherically symmetric inhomogeneous coupled dark energy model with coupling term proportional to non relatvistic matter
• Observational constraints on the free parameters of an interacting Bose-Einstein gas as a dark-energy model
• Some Classes of Interacting Two-Fluid Model of the Expanding Universe
• Thermal Gravitational Radiation and Condensed Universe
• Constraining super-critical string/brane cosmologies with astrophysical data
• Is Dark Energy Increasing or Decreasing in the Late Universe?
• Kinematical models of latetime cosmology and the statefinder diagnostic
• Cosmological implications and causality in $f(R,L_m,T)$ gravity theory with observational constraints
• Probing Time-Varying Dark Energy with DESI: The Crucial Role of Precision Matter Density (Ω_{m0}) Measurements
• Cosmological Constraints on the Undulant Universe
• Background dynamics and observational constraints of flat and non-flat $\Lambda (t)$CDM models from $H(z)$ and DESI DR2 BAO measurements
• Cosmological test of a length-preserving biconnection gravity
• Serial Acceleration-Deceleration Transitions in a Cyclic Universe with Negative Curvature
• Smooth Beginning of the Universe
• Testing the effects from dark radiation
• Cosmological analysis of a DGP stable model with $H(z)$ observations a revision
• Constraining the Hubble Constant with a Simulated Full Covariance Matrix Using Neural Networks
• Energy conditions and entropy density of the universe
• Testing the CCC+TL cosmology with cosmic-chronometer measurements of the Hubble parameter
• Constraints on AvERA Cosmologies from Cosmic Chronometers and Type Ia Supernovae
• From Geometry to Observation: Gravitational Waves and the Raychaudhuri Equation
• Lookback time and Chandra constrains on cosmological parameters
• FLRW Kinematic-Induced Measurement of the Hubble Constant from Cosmic Chronometer and Redshift Drift Observations
• Optimizing Gaussian Process Kernels Using Nested Sampling and ABC Rejection for H(z) Reconstruction
• Cosmology with Coupled Gravity and Dark Energy
• Is Dark Energy an Effective Manifestation of Non-equilibrium Thermodynamics? -- Insights from DESI
• Friedmann-free limits on spatial curvature
• Cosmography via stellar archaeology of low-redshift early-type galaxies from SDSS
• Fluctuation of the Hubble parameter
• J-PAS: forecast on the primordial power spectrum reconstruction
• Implications of a high growth index on the variation of $G$
• Cosmic Dynamics in Einstein-Cartan Theory: Analysing Hubble Tension through Curvature and Torsion field
• EFT of Dark Energy with Cosmic Chronometers: Reconstructing Background EFT Functions
• Intermediate redshift calibration of Gamma-ray Bursts and cosmic constraints in non-flat cosmology
• Cosmic chronometers with galaxy clusters: a new avenue for multi-probe cosmology
• A Combined Barrow Entropy and QCD Ghost Mechanism for Late-Time Cosmic Acceleration
• Observational Constraints and Geometric Diagnostics of Barboza-Alcaniz and Logarithmic Dark Energy Parametrizations
• The model-independent degeneracy-breaking point in cosmological models with interacting Dark Energy and Dark Matter
• On Generalized Theories of Varying Fine Structure Constant
• Probing the Hubble Tension with an Infinite-Future Condition on the Hubble Parameter