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相关论文: Buchdahl quark stars within $f(Q)$ theory

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This paper presents a novel anisotropic quark star model in the backdrop of mimetic gravitational theory. Our study focuses on the strange quark stars using the MIT bag equation of state (EoS) admitting non-singular Buchdahl metric…

广义相对论与量子宇宙学 · 物理学 2025-09-16 Meghanil Sinha , S. Surendra Singh

In this article we propose a new class of isotropic strange star using Buchdahl-I metric ansatz in the context of MIT bag model equation of state considering of non-zero strange quark mass $(m_{s})$ in the framework of modified $f(R,T)$…

广义相对论与量子宇宙学 · 物理学 2024-05-22 Debadri Bhattacharjee , Pradip Kumar Chattopadhyay

In the current article, we study anisotropic spherically symmetric strange star under the background of $f(R,T)$ gravity using the metric potentials of Tolman-Kuchowicz type~\cite{Tolman1939,Kuchowicz1968} as $\lambda(r)=\ln(1+ar^2+br^4)$…

广义相对论与量子宇宙学 · 物理学 2020-06-03 Suparna Biswas , Dibyendu Shee , B. K. Guha , Saibal Ray

This paper deals with existence of strange stars in $f\left(T\right) $ modified gravity. For this purpose, we have taken the diagonal tetrad field of static spacetime with charged anisotropic fluid and MIT bag model, which provide the…

综合物理 · 物理学 2016-06-28 G. Abbas , Shahid Qaisar , Abdul Jawad

We investigate effects of the modified $f(R, \mathcal{T})$ gravity on the charged strange quark stars with the standard choice of $f(R, \mathcal{T})=R+2\chi \mathcal{T}$. Those types of stars are supposed to be made of strange quark matter…

广义相对论与量子宇宙学 · 物理学 2019-11-06 Debabrata Deb , Sergei V. Ketov , Maxim Khlopov , Saibal Ray

In this paper, we construct a viable strange star model in the framework of the equation of state, $p_r=\frac{1}{3}(\rho-4B)$, proposed in the MIT bag model, where $B$ is termed as the bag constant. Considering extreme Wood-Saxon-like…

In the present work, we study about highly dense compact stars which are made of quarks, specially strange quarks, adopting the Krori-Barua (KB)~\cite{Krori1975} metric in the framework of $f(R,T)$ gravity. The equation of state (EOS) of a…

广义相对论与量子宇宙学 · 物理学 2018-12-31 Suparna Biswas , Shounak Ghosh , B. K. Guha , F. Rahaman , Saibal Ray

In the current study, we investigated a specific model of anisotropic strange stars specially Her X-1, in the background of modified f(R,T) gravity by choosing f(R,T) = R+2{\xi}T, where R is Ricci scalar, T is the trace of the…

广义相对论与量子宇宙学 · 物理学 2022-02-17 H. D. Singh , J. Kumar

We study strange stars in the framework of $f\left(R,\mathcal{T}\right)$ theory of gravity where the strange quark matter distribution inside the stellar system is governed by the phenomenological MIT Bag model equation of state (EOS).…

综合物理 · 物理学 2018-04-24 Debabrata Deb , Farook Rahaman , Saibal Ray , B. K. Guha

We investigate the effects of non-Newtonian gravity on the properties of strange quark stars (QSs) and constrain the parameters of the standard MIT bag model used to describe strange quark matter (SQM) by employing the mass of PSR…

高能天体物理现象 · 物理学 2020-10-14 Shu-Hua Yang , Chun-Mei PI , Xiao-Ping Zheng , Fridolin Weber

We propose a spherically symmetric and anisotropic model for strange quark stars within the framework of MIT Bag model. Though the model is found to comply with all the physical requirements of a realistic star satisfying a strange matter…

广义相对论与量子宇宙学 · 物理学 2017-11-20 Mehedi Kalam , Anisul Ain Usmani , Farook Rahaman , Sk. Monowar Hossein , Indrani Karar , Ranjan Sharma

We study a specific model of anisotropic strange stars in the modified $f\left(R,\mathcal{T}\right)$-type gravity by deriving solutions to the modified Einstein field equations representing a spherically symmetric anisotropic stellar…

广义相对论与量子宇宙学 · 物理学 2019-05-01 Debabrata Deb , Sergei V. Ketov , S. K. Maurya , Maxim Khlopov , P. H. R. S. Moraes , Saibal Ray

The observed evidence for the existence of strange stars and the concomitant observed masses and radii are used to derive an interpolation formula for the mass as a function of the radial coordinate. The resulting general mass function…

广义相对论与量子宇宙学 · 物理学 2015-06-22 Farook Rahaman , Koushik Chakraborty , P. K. F. Kuhfittig , G. C. Shit , Mosiur Rahman

We explore the maximum mass limit of strange stars in quadratic curvature gravity with the non-minimal matter coupling. The characteristic parameters of the quadratic curvature coupling and the non-minimal matter coupling imply the…

广义相对论与量子宇宙学 · 物理学 2026-04-24 Debadri Bhattacharjee , Pradip Kumar Chattopadhyay , Kazuharu Bamba

In this article we propose a relativistic model of a static spherically symmetric anisotropic strange star with the help of Tolman-Kuchowicz (TK) metric potentials [Tolman, Phys. Rev. {\bf55}, 364 (1939) and Kuchowicz, Acta Phys. Pol.…

广义相对论与量子宇宙学 · 物理学 2019-10-02 Suparna Biswas , Dibyendu Shee , Saibal Ray , F. Rahaman , B. K. Guha

We show that the mass-radius $(M-R)$ relation corresponding to the MIT bag models of strange quark matter (SQM) and the models obtained by Day et al (1998) do not provide the necessary and sufficient condition for dynamical stability for…

天体物理学 · 物理学 2011-07-25 P. S. Negi

The properties of electrically charged strange quark stars predicted by an interacting quark matter equation of state (EoS) based on cold and dense perturbative quantum chromodynamics (pQCD) are investigated. The stability of strange stars…

高能物理 - 唯象学 · 物理学 2020-09-02 V. P. Goncalves , L. Lazzari

We have investigated the structural properties of strange quark stars (SQSs) in a modified theory of gravity known as massive gravity. In order to obtain the equation of state (EOS) of strange quark matter, we have employed a modified…

广义相对论与量子宇宙学 · 物理学 2024-02-23 J. Sedaghat , B. Eslam Panah , R. Moradi , S. M. Zebarjad , G. H. Bordbar

The existence of strange matter in compact stars may pose striking sequels of the various physical phenomena. As an alternative to neutron stars, a new class of compact stars called strange stars should exist if the strange matter…

广义相对论与量子宇宙学 · 物理学 2021-03-02 Ayan Banerjee , Takol Tangphati , Phongpichit Channuie

We present a singularity-free relativistic interior solution for constructing stable quark stellar models in the framework of a linear $f(Q)$ gravity ($f(Q) = \alpha Q + \phi$) satisfying the pseudo-spheroidal geometry. The physical…

广义相对论与量子宇宙学 · 物理学 2025-09-16 Bibhash Das , Bikash Chandra Paul
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