Generalized Chaplygin gas and accelerating universe in $f(Q,T)$ gravity

Abstract

The generalized Chaplygin gas (GCG), which has an unusual perfect fluid equation of state, is another promising candidate for dark energy. We investigate the GCG scenario coupled with a baryonic matter in a newly suggested $f(Q,T)$ gravity, an arbitrary function of non-metricity $Q$ and the trace of energy-momentum tensor $T$. We consider the functional form of $f(Q,T)$ as a linear combination of $Q$ and an arbitrary function of $T$, denoted by $h(T)$. Furthermore, we obtain two different functional forms of the $f(Q,T)$ model under high pressure and high-density scenarios of GCG. We also test each model with the recent Pantheon supernovae data set of 1048 data points, Hubble data set of 31 points, and baryon acoustic oscillations. The deceleration parameter is constructed using $OHD+SNeIa+BAO$, predicting a transition from decelerated to accelerated phases of the universe expansion. Also, the equation of state parameter acquires a negative behavior depicting acceleration. Finally, we analyze the statefinder diagnostic to discriminate between the GCG and other dark energy models.

arXiv commentPhysics of the Dark Universe published version

References in corpus (54)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• emcee: The MCMC Hammer
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• Cosmological Imprint of an Energy Component with General Equation of State
• A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
• f(R,T) gravity
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• An alternative to quintessence
• Phantom Energy and Cosmic Doomsday
• Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification
• Baryon Acoustic Oscillations in the Sloan Digital Sky Survey Data Release 7 Galaxy Sample
• Cosmological Tracking Solutions
• Statefinder -- a new geometrical diagnostic of dark energy
• f(T) teleparallel gravity and cosmology
• Disappearing cosmological constant in f(R) gravity
• Dark Energy Constraints from the Cosmic Age and Supernova
• Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z$\sim$2
• The WiggleZ Dark Energy Survey: mapping the distance-redshift relation with baryon acoustic oscillations
• Exploring the Expanding Universe and Dark Energy using the Statefinder Diagnostic
• Cosmological Evolution of a Quintom Model of Dark Energy
• Can the Chaplygin gas be a plausible model for dark energy?
• $f(Q,T)$ gravity
• Coupling matter in modified $Q$-gravity
• Hubble parameter measurement constraints on the redshift of the deceleration-acceleration transition, dynamical dark energy, and space curvature
• Large Scale Structure as a Probe of Gravitational Slip
• Hubble Parameter and Baryon Acoustic Oscillation Measurement Constraints on the Hubble Constant, the Deviation from the Spatially-Flat $\Lambda$cdm Model, The Deceleration-Acceleration Transition Redshift, and Spatial Curvature
• Correcting Type Ia Supernova Distances for Selection Biases and Contamination in Photometrically Identified Samples
• Modelling wormholes in $f(R,T)$ gravity
• f(R,T) Cosmological Models in Phase Space
• From cosmic deceleration to acceleration: new constraints from SN Ia and BAO/CMB
• New generalized Chaplygin gas as a scheme for unification of dark energy and dark matter
• $f(Q,T)$ gravity models with observational constraints
• A parametric reconstruction of the deceleration parameter
• Baryogenesis in $f(Q,\mathcal{T})$ Gravity
• Three thermodynamically-based parametrizations of the deceleration parameter
• Cosmological Perturbation Theory in $f(Q,T)$ Gravity
• Binned Hubble parameter measurements and the cosmological deceleration-acceleration transition
• Gaussian Process Estimation of Transition Redshift
• Constraining cosmic deceleration-acceleration transition with type Ia supernova, BAO/CMB and H(z) data
• Constraints on barotropic dark energy models by a new phenomenological $q(z)$ parameterization
• Fitting $f(Q,T)$ gravity models with a $\Lambda$CDM limit using H(z) and Pantheon data
• Constraining effective equation of state in $f(Q,T)$ gravity
• Observational constraint on generalized Chaplygin gas model
• On the determination of the deceleration parameter from Supernovae data
• Observational constraints on Myrzakulov gravity
• Viscous cosmology in the Weyl-type $f(Q,T)$ gravity
• Late time acceleration due to generic modification of gravity and Hubble tension
• Viscous Generalized Chaplygin Gas Interacting with f(R,T) gravity
• Chaplygin-gas Solutions of f(R) Gravity
• Observational constraints on decaying vacuum dark energy model
• Possible Resolution of the Hubble Tension with Weyl Invariant Gravity
• Thermodynamical description of modified generalized Chaplygin gas model of dark energy

Cited by in corpus (12)

• Phase structure of charged AdS black holes surrounded by exotic fluid with modified Chaplygin equation of state
• Reconstruction of $f(Q,T)$ Lagrangian for various cosmological scenario
• Non-exotic static spherically symmetric thin-shell wormhole solution in $f(Q,T)$ gravity
• Interaction of divergence-free deceleration parameter in Weyl-type $f(Q,T)$ gravity
• Dark energy constraint on equation of state parameter in the Weyl type $f(Q,T)$ gravity
• Effects of the matter Lagrangian degeneracy in $f(Q,T)$ gravity
• Statistical and Observation Comparison of Weyl-Type $f(Q,T)$ Models with the $\Lambda$CDM Paradigm
• Parameterized Deceleration in $f(Q,C)$ Gravity: A Logarithmic Approach
• Revisiting kink-like parametrization and constraints using OHD/Pantheon+/BAO samples
• Testing Gauss-Bonnet Gravity with DESI BAO Data
• Observational Constraints on Chaplygin Gas Models in Non-Minimally Coupled Power Law $f(Q)$ Gravity with Quasars
• Physical Implications and Updated Observational Constraints of the PAge-like Unified Dark Fluid Model