Transit String Dark Energy Models in $f(Q)$ Gravity

Abstract

In this paper, we have investigated an anisotropic cosmological model in $f(Q)$ gravity with string fluid in LRS Bianchi type-I universe. We have considered the arbitrary function $f(Q)=Q+\alpha \sqrt{Q}+2\Lambda$ where $\alpha$ is model free parameter and $\Lambda$ is the cosmological constant. We have established a relationship between matter energy density parameter ${\Omega }_m$ and dark energy density parameter ${\Omega }_{\Lambda }$ through Hubble function using using constant equation of state parameter $\omega$. We have made observational constraint on the model using ${\chi }^2$-test with observed Hubble datasets $H(z)$ and SNe Ia datasets, and obtained the best fit values of cosmological parameters. We have used these best fit values in the result and discussion. We have discussed our result with cosmographic coefficients and found a transit phase dark energy model. Also, we analyzed the Om diagnostic function for anisotropic universe and found that our model is quintessence dark energy model.

arXiv comment24 pages, 12 Figures

References in corpus (87)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Dynamics of dark energy
• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• Extended Theories of Gravity
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Introduction to Modified Gravity and Gravitational Alternative for Dark Energy
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Disappearing cosmological constant in f(R) gravity
• Constraints on the redshift dependence of the dark energy potential
• A 6% measurement of the Hubble parameter at $z\sim 0.45$: direct evidence of the epoch of cosmic re-acceleration
• Modified teleparallel gravity: inflation without inflaton
• Cosmic Chronometers: Constraining the Equation of State of Dark Energy. I: H(z) Measurements
• Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z$\sim$2
• Improved constraints on the expansion rate of the Universe up to z~1.1 from the spectroscopic evolution of cosmic chronometers
• Coincident General Relativity
• Modified f(R) gravity consistent with realistic cosmology: from matter dominated epoch to dark energy universe
• Palatini Approach to Modified Gravity: f(R) Theories and Beyond
• Two new diagnostics of dark energy
• Clustering of Luminous Red Galaxies IV: Baryon Acoustic Peak in the Line-of-Sight Direction and a Direct Measurement of H(z)
• Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
• Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined with Other Cosmological Probes
• Age-dating Luminous Red Galaxies observed with the Southern African Large Telescope
• Cosmology in $f(Q)$ geometry
• A systematic approach to generalisations of General Relativity and their cosmological implications
• Coupling matter in modified $Q$-gravity
• Cosmography: Cosmology without the Einstein equations
• Large Scale Structure as a Probe of Gravitational Slip
• Dark Energy Anisotropic Stress and Large Scale Structure Formation
• Modeling the Anisotropic Two-Point Galaxy Correlation Function on Small Scales and Improved Measurements of H(z), D_A(z), and f(z)sigma_8(z) from the Sloan Digital Sky Survey DR7 Luminous Red Galaxies
• Cosmography in f(T)-gravity
• Cosmological solutions and growth index of matter perturbations in $f(Q)$ gravity
• Modified gravity models of dark energy
• Cosmography of f(R) gravity
• Teleparallel Palatini theories
• First Cosmological Results using Type Ia Supernovae from the Dark Energy Survey: Measurement of the Hubble Constant
• Non trivial frames for f(T) theories of gravity and beyond
• Cosmographic bounds on the cosmological deceleration-acceleration transition redshift in $f(\mathcal{R})$ gravity
• Accelerated Expansion of the Universe in Non-minimally Coupled Gravity
• Cosmography in $f(Q)$ gravity
• Symmetric teleparallel general relativity
• On the theory and applications of modern cosmography
• Model independent constraints on dark energy evolution from low-redshift observations
• Cosmographic analysis with Chebyshev polynomials
• Modified teleparallel theories of gravity in symmetric spacetimes
• Cosmographic Constraints and Cosmic Fluids
• Unifying Einstein and Palatini gravities
• Binned Hubble parameter measurements and the cosmological deceleration-acceleration transition
• F(R) cosmology in presence of a phantom fluid and its scalar-tensor counterpart:towards a unified precision model of the universe evolution
• Updated constraints on $f(\mathcal{R})$ gravity from cosmography
• Traversable wormholes in $f(R)$ gravity with constant and variable redshift functions
• Rational approximations of $f(R)$ cosmography through Padé polynomials
• Testing Low-Redshift Cosmic Acceleration with Large-Scale Structure
• Model-independent reconstruction of $f(T)$ teleparallel cosmology
• Kinematic model-independent reconstruction of Palatini $f(R)$ cosmology
• Connecting early and late universe by $f(R)$ gravity
• FRW Cosmology in $f(Q,T)$ Gravity
• Comparative analysis of model-independent methods for exploring the nature of dark energy
• Traversable wormhole solutions with non-exotic fluid in framework of $f(Q)$ gravity
• Cosmography of f(R) - brane cosmology
• Real-time cosmography with redshift derivatives
• Quintessence Behaviour of an Anisotropic Bulk Viscous Cosmological Model in Modified $f(Q)$-Gravity
• Conformally Friedmann-Lemaitre-Robertson-Walker cosmologies
• Model-Independent Constraints on Lorentz Invariance Violation via the Cosmographic Approach
• Isotropy of low redshift type Ia Supernovae: A Bayesian analysis
• Pantheon update on a model-independent analysis of cosmological supernova data
• Cosmography, Decelerating Past, and Cosmological Models: Learning the Bayesian Way
• Cosmography and cosmic acceleration
• Constraining the dark energy statefinder hierarchy in a kinematic approach
• Anisotropic String Cosmological Models in Heckmann-Suchuking Space-Time
• Information entropy and dark energy evolution
• {\it Gauging} the cosmic acceleration with recent type Ia supernovae data sets
• Backreaction and FRW consistency conditions
• Testing Lambda and the Limits of Cosmography with the Union2.1 Supernova Compilation
• Observational Constraints on Growth Index with Cosmography
• What do the cosmological supernova data really tell us?
• Limits on the Reconstruction of a Single Dark Energy Scalar Field Potential from SNe Ia Data
• Minimal cosmography
• Constraining f(R) theories with cosmography
• Angular distribution of cosmological parameters as a probe of inhomogeneities: a kinematic parametrisation
• New Cosmographic Constraints on the Dark Energy and Dark Matter Coupling
• Evolution of Vacuum Bubbles Embeded in Inhomogeneous Spacetimes

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• Non-exotic static spherically symmetric thin-shell wormhole solution in $f(Q,T)$ gravity
• Exact Cosmology in Myrzakulov Gravity
• Myrzakulov $F(T,Q)$ gravity: cosmological implications and constraints
• Late-time dynamics of dark energy EoS in symmetric teleparallel gravity
• Domain Wall and Holographic Dark Energy in $f(Q)$ Theory of Gravity
• Quintessence dark energy model in non-linear $f(Q)$ theory with bulk-viscosity
• The $f(Q)$ gravity and affine EoS: Compatibility and observational constraints