Physical Analysis of Spherical Stellar Structures in $f(\mathrm{Q},\mathrm{T})$ Theory

Abstract

This paper explores the viability and stability of compact stellar objects characterized by anisotropic matter in the framework of $f(\mathrm{Q},\mathrm{T})$ theory, where $\mathrm{Q}$ denotes non-metricity and $\mathrm{T}$ represents the trace of the energy-momentum tensor. We consider a specific model of this theory to obtain explicit expressions for the field equations governing the behavior of matter and geometry in this context. Furthermore, the Karmarkar condition is employed to assess the configuration of static spherically symmetric structures. The values of unknown constants in the metric potentials are determined through matching conditions of the interior and exterior spacetimes. Various physical quantities such as fluid parameters, energy constraints, equation of state parameters, mass, compactness and redshift are graphically analyzed to evaluate the viability of the considered compact stars. The Tolman-Oppenheimer-Volkoff equation is used to examine the equilibrium state of the stellar models. Moreover, the stability of the proposed compact stars is investigated through sound speed and adiabatic index methods. This study concludes that the proposed compact stars analyzed in this theoretical framework are viable and stable, as all the required conditions are satisfied.

46 pages, 14 figures

References in corpus (36)

• f(R) theories
• f(R,T) gravity
• Refined Neutron-Star Mass Determinations for Six Eclipsing X-Ray Pulsar Binaries
• $f(Q,T)$ gravity
• Extended Scalar-Tensor Theories of Gravity
• The Mass and Radius of the Neutron Star in EXO 1745-248
• Maximal neutron star mass and the resolution of hyperon puzzle in modified gravity
• Constraints on Perturbative f(R) Gravity via Neutron Stars
• Moments of inertia for neutron and strange stars: limits derived for the Crab pulsar
• Compact stars in $f(R,T)$ gravity
• Relativistic model for anisotropic strange stars
• The Mass of the Compact Object in the X-Ray Binary Her X-1/HZ Her
• Weyl type $f(Q,T)$ gravity, and its cosmological implications
• Physically viable solutions of anisotropic spheres in $f(\mathcal{R},\mathcal{G})$ gravity satisfying the Karmarkar condition
• $f(Q,T)$ gravity models with observational constraints
• Strange stars in $f(R,\mathcal{T})$ gravity
• Baryogenesis in $f(Q,\mathcal{T})$ Gravity
• Optical spectroscopy and photometry of SAX J1808.4-3658 in outburst
• A family of well-behaved Karmarkar spacetime describing interior of relativistic stars
• Measurement of the Two-Neutrino Double Beta Decay Half-life of ${}^{130}$Te with the CUORE-0 Experiment
• Matter Bounce Scenario and the Dynamical aspects in f(Q,T) Gravity
• Strange stars in Krori-Barua space-time under f(R; T) gravity
• Viable and Stable Compact Stars in $f(\mathcal{Q})$ Theory
• A new class of relativistic model of compact stars of embedding class I
• A charged anisotropic well-behaved Adler-Finch-Skea solution Satisfying Karmarkar Condition
• Physical Attributes of Anisotropic Compact Stars in $f(R,G)$ Gravity
• Influence of $f(R)$ Models on the Existence of Anisotropic Self-Gravitating Systems
• Static spherically symmetric wormholes in $f(Q,T)$ gravity
• Bardeen Stellar Structures with Karmarkar Condition
• Fitting $f(Q,T)$ gravity models with a $\Lambda$CDM limit using H(z) and Pantheon data
• Compact star in Tolman Kuchowicz spacetime in background of Einstein Gauss Bonnet gravity
• Anisotropic spheres via embedding approach in $\mathcal{R}+\beta {\mathcal{R}}^2$ gravity with matter coupling
• FRW Cosmology in $f(Q,T)$ Gravity
• Compact stellar models in modified gravity
• Noether Symmetries and Some Exact Solutions in $f(R,T^2)$ Theory
• Stellar Structures admitting Noether Symmetries in $f(\mathcal{R},\mathcal{T})$ Gravity

Cited by in corpus (3)

• Analysis of Cosmic Evolution admitting Garcia-Salcedo Ghost and Generalized Ghost Dark Energy Models
• Impact of Non-metricity and Matter Source on the Geometry of Anisotropic Spheres
• Exploring the viability of charged Spheres admitting non-metricity and matter source