Neutron Star in Covariant $f(Q)$ gravity

Abstract

Assuming static and spherically symmetric stars with perfect fluid matter, we used realistic equations of state to study neutron stars in covariant $f(Q)$ gravity. The structure profiles and properties of neutron stars such as mass, radius and compactness are obtained through numerical methods using quadratic, exponential, and logarithmic $f(Q)$ models. The results indicate that nonmetricity affects the interior profile deviations of the star, which in turn influence the properties of stars, as illustrated in the mass-radius relation diagram. This effect allows the star to accommodate either more or less matter compared to GR, resulting in a different total mass. For the quadratic model, we cannot generate larger masses, whereas the other two models can give consistent results for both smaller and larger masses of the observed stars. By tuning model parameters, we obtain $\mathcal{M}-\mathcal{R}$ diagrams that are compatible with observational constraints from NICER and LIGO.

29 pages, 36 figures

References in corpus (79)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Planck 2015 results. XIII. Cosmological parameters
• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Shapiro delay measurement of a two solar mass neutron star
• The equation of state for nucleon matter and neutron star structure
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
• A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
• Masses, Radii, and Equation of State of Neutron Stars
• A unified equation of state of dense matter and neutron star structure
• A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
• Coincident General Relativity
• Constraints on a phenomenologically parameterized neutron-star equation of state
• Equation of state and neutron star properties constrained by nuclear physics and observation
• Planck 2015 results. XI. CMB power spectra, likelihoods, and robustness of parameters
• The teleparallel equivalent of general relativity
• The Equation of State of Hot, Dense Matter and Neutron Stars
• Cosmology in $f(Q)$ geometry
• Relativistic Mean-Field Theory and the High-Density Nuclear Equation of State
• Refined Neutron-Star Mass Determinations for Six Eclipsing X-Ray Pulsar Binaries
• The Neutron Star Mass-Radius Relation and the Equation of State of Dense Matter
• Observational constraints of $f(Q)$ gravity
• Coupling matter in modified $Q$-gravity
• Peering into the dark side: magnesium lines establish a massive neutron star in PSR J2215+5135
• Cosmological solutions and growth index of matter perturbations in $f(Q)$ gravity
• First evidence that non-metricity f(Q) gravity could challenge $\Lambda$CDM
• Analytical representations of unified equations of state for neutron-star matter
• The Mass-Radius relation for Neutron Stars in $f(R)$ gravity
• Extreme neutron stars from Extended Theories of Gravity
• Teleparallel Palatini theories
• Constraining the Mass and Radius of Neutron Stars in Globular Clusters
• Covariant formulation of f(Q) theory
• Testing $F(Q)$ gravity with redshift space distortions
• Signatures of $f(Q)$-gravity in cosmology
• Nonmetricity formulation of general relativity and its scalar-tensor extension
• Black holes in $f(\mathbb{Q})$ Gravity
• The realistic models of relativistic stars in f(R) = R + alpha R^2 gravity
• Symmetric teleparallel general relativity
• Junction Conditions in f(R) Theories of Gravity
• Using Neutron Star Observations to Determine Crust Thicknesses, Moments of Inertia, and Tidal Deformabilities
• Junction conditions for F(R)-gravity and their consequences
• Lagrange formulation of the symmetric teleparallel gravity
• Spherically symmetric configuration in $f(Q)$ gravity
• Non-perturbative and self-consistent models of neutron stars in R-squared gravity
• Neutron stars in Starobinsky model
• Symmetric Teleparallel Gravity: Some exact solutions and spinor couplings
• Dynamical system analysis for accelerating models in non-metricity $f(Q)$ gravity
• FLRW solutions in $f(Q)$ theory: the effect of using different connections
• Viable and Stable Compact Stars in $f(\mathcal{Q})$ Theory
• On the impact of $f(Q)$ gravity on the Large Scale Structure
• Conformal Gravity and Transformations in the Symmetric Teleparallel Framework
• The Non-Metricity Formulation of General Relativity
• Implications of the mass $M=2.17_{-0.10}^{+0.11}$M${}_{\odot }$ of PSR~J0740+6620 on the Equation of State of Super-Dense Neutron-Rich Nuclear Matter
• Anisotropic Strange Star Model Beyond Standard Maximum Mass Limit by Gravitational Decoupling in $f(Q)$ Gravity
• The mass-radius relation for neutron stars in $f(R)=R+\alpha R^2$ gravity: a comparison between purely metric and torsion formulations
• On the viability of $f(Q)$ gravity models
• Compact stars in $f(T)$ extended theory of gravity
• Influence of three parameters on maximum mass and stability of strange star under linear $f(Q)-$action
• Phantom cosmological model with observational constraints in $f(Q)$ gravity
• Homogeneous and isotropic cosmology in general teleparallel gravity
• Phase-space analysis of a novel cosmological model in $f(Q)$ theory
• Twins: The Two Shortest Period Non-Interacting Double Degenerate White Dwarf Stars
• Accelerating cosmological models in $f(Q)$ gravity and the phase space analysis
• Geodesic Deviation Equation In $f(Q)$-Gravity
• Connection independent formulation of general relativity
• A Perturbative Approach to Neutron Stars in $f(T,\mathcal{T})-$Gravity
• Realistic neutron star models in $f(T)$ gravity
• Energy condition bounds on $f(Q)$ model parameters in a curved FLRW universe
• How different connections in flat FLRW geometry impact energy conditions in $f(Q)$ theory?
• Constraints on $f(Q)$ logarithmic model using gravitational wave standard sirens
• Energy Conditions and Junction Conditions
• Tolman-Oppenheimer-Volkoff Equations and their implications or the structures of relativistic Stars in f(T) gravity
• Neutron Stars in frames of $R^2$-gravity and Gravitational Waves
• Equation of State of Neutron Stars with Junction Conditions in the Starobinsky Model
• Revisiting compact star in $F(R)$ gravity: Roles of chameleon potential and energy conditions
• Solving Tolman-Oppenheimer-Volkoff equations in $f(T)$ gravity: a novel approach
• Solving Tolman-Oppenheimer-Volkoff equations in f(T) gravity: a novel approach applied to some realistic equations of state
• Consistent particle physics in metric-affine gravity from extended projective symmetry

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• Equivalence of $f(Q)$ cosmology with quintom-like scenario: the phantom field as effective realization of the non-trivial connection
• Accelerating behavior from dynamical system analysis parameters
• Properties of compact objects in quadratic non-metricity gravity
• Can an Extra Degree of Freedom in Scalar-Tensor Non-Metricity Gravity Account for the Evolution of the Universe?
• Relativistic stars in $f(Q)$-gravity: Exact analytic solution for the power-law case $f(Q)=Q+b{Q}^{\nu }$
• Neutron stars in $f(\mathbb{Q})$ gravity