Physical Implications of Pure Lovelock Geometry on Stellar Structure

Singh, Ksh. Newton; Govender, M.; Hansraj, Sudan; Rahaman, Farook

doi:10.1002/andp.202100596

Cited by 3 publications

(1 citation statement)

References 48 publications

(73 reference statements)

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“…Finally, if ω < − 1/3, it leads to a dark energy state. In this study, for the sake of simplicity, we have used the following EoS [61,62]:…”

Section: Basic Conceptsmentioning

confidence: 99%

Features of anisotropic compact stars in rastall teleparallel gravity via linear equation of state

Ditta,

Tiecheng

2024

Phys. Scr.

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This paper aims to discuss the model of compact stars based on spherically symmetric spacetime, with a focus on the gravitational effects of Rastall teleparallel gravity, where $T$ represents torsion and $\lambda$ represents the Rastall parameter. In this study, we evaluate the spherically symmetric spacetime component $e^{a(r)}$ in terms of $e^{b(r)}$ using the linear equation of state $p_r=\beta \rho+\gamma$, while the other component $e^{b(r)}$ is assumed from the literature. The paper delves into a detailed analysis of various properties of compact stars such as energy density profile, pressure components, gradients profiles, anisotropic conduct, energy limits, equation of state profiles, velocities of sound profiles, TOV equation profiles, and compactification profile. We use the well-known junction conditions to facilitate the evaluation of the unknown parameters, taking the standard Schwarzschild metric as the outer spacetime. Through detailed analysis in graphical form, we demonstrate that the model showing the anisotropic conduct of stellar objects is viably legitimate, regular, and stable. Overall, the paper provides a comprehensive analysis of the properties of compact stars, which will undoubtedly contribute to our understanding of these astrophysical phenomena.

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“…Finally, if ω < − 1/3, it leads to a dark energy state. In this study, for the sake of simplicity, we have used the following EoS [61,62]:…”

Section: Basic Conceptsmentioning

confidence: 99%

Features of anisotropic compact stars in rastall teleparallel gravity via linear equation of state

Ditta,

Tiecheng

2024

Phys. Scr.

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Rotating black branes in Lovelock gravity with double-logarithmic electrodynamics

Ali

Saifullah²

2022

Annals of Physics

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The effect of modified hybrid and logarithmic teleparallel gravity on the interior solutions of compact stars

Ditta,

Tiecheng,

Mustafa

et al. 2023

Eur. Phys. J. C

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This study aims to investigate spherically symmetric anisotropic solutions that describe compact stellar objects in the modified Rastall teleparallel (MRT) theory of gravity. In order to achieve this goal, we utilize the Karmarkar condition to evaluate the spherically symmetric components of the line element. We explore the field equations by selecting appropriate off-diagonal tetrad fields for two different scenarios. In the first scenario, we use a hybrid form of $$f(T)=\beta e^{m T} T^n$$ f ( T ) = β e mT T n and a linear equation of state (EoS) $$p_r=\xi \rho +\phi $$ p r = ξ ρ + ϕ , where $$0< \xi < 1$$ 0 < ξ < 1 , to evaluate h(T). In the second scenario, we again use a hybrid form of $$f(T)=\beta e^{m T} T^n$$ f ( T ) = β e mT T n and a logarithmic form of $$h(T)=\psi \log (\phi T^{\chi })$$ h ( T ) = ψ log ( ϕ T χ ) . We aim to investigate the possible forms of gravity modifications by evaluating the function for different values of m and n, reducing the gravity forms to hybrid, power law form, and exponential form. Our findings reveal that the exponential-logarithmic case is unstable in our scenario. To the best of our knowledge, we are the first to attempt to explore compact star models in MRT gravity. After obtaining the field equations, we investigate different physical parameters that demonstrate the stability and physical acceptability of the stellar models. We utilize observational data, such as the mass and radius of the $$PSRJ\;1416-2230$$ P S R J 1416 - 2230 model, to ensure the physical plausibility of our findings.

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Physical Implications of Pure Lovelock Geometry on Stellar Structure

Cited by 3 publications

References 48 publications

Features of anisotropic compact stars in rastall teleparallel gravity via linear equation of state

Features of anisotropic compact stars in rastall teleparallel gravity via linear equation of state

Rotating black branes in Lovelock gravity with double-logarithmic electrodynamics

The effect of modified hybrid and logarithmic teleparallel gravity on the interior solutions of compact stars

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