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<p>This manuscript examines the effect of charge on the stability of hybrid stars composed of strange quark matter and baryonic matter within the framework of <i>f</i>(<i>Q</i>) gravity, where <i>Q</i> represents non-metricity. We take the Finch-Skea metric with anisotropic matter and the MIT bag model, which describes the equation of state for strange quark matter and a linear equation of state for baryonic matter. We select the compact star EXO 1785-248 and analyze five different values of the charge <i>q</i> to study its impact on the star’s properties. Physical characteristics including metric components, energy density, radial and tangential pressures, anisotropy, gradients, quark matter parameters, equation of state parameter, energy conditions and the mass function are analyzed through graphical methods. Finally, we discuss the stability of the hybrid star using parameters such as compactness, redshift, causality conditions, Herrera cracking and the adiabatic index. We conclude that charge significantly affects the structural and stability characteristics of hybrid stars in this modified gravity.</p>

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The effect of charge on the stability of hybrid stars in modified symmetric teleparallel gravity

  • 期刊论文

  • 发表日期：

    2026年3月17日

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  • M. Sharif,
  • Eman M. Moneer,
  • Madiha Ajmal,
  • Euaggelos E. Zotos

摘要

This manuscript examines the effect of charge on the stability of hybrid stars composed of strange quark matter and baryonic matter within the framework of f(Q) gravity, where Q represents non-metricity. We take the Finch-Skea metric with anisotropic matter and the MIT bag model, which describes the equation of state for strange quark matter and a linear equation of state for baryonic matter. We select the compact star EXO 1785-248 and analyze five different values of the charge q to study its impact on the star’s properties. Physical characteristics including metric components, energy density, radial and tangential pressures, anisotropy, gradients, quark matter parameters, equation of state parameter, energy conditions and the mass function are analyzed through graphical methods. Finally, we discuss the stability of the hybrid star using parameters such as compactness, redshift, causality conditions, Herrera cracking and the adiabatic index. We conclude that charge significantly affects the structural and stability characteristics of hybrid stars in this modified gravity.