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We explore the stellar structure and radial stability of charged quark stars composed of interacting quark matter (IQM) in three classes of commonly used charge models. We adopt a general parametrization of IQM equation of state that…

High Energy Astrophysical Phenomena · Physics 2021-12-28 Chen Zhang , Michael Gammon , Robert B. Mann

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 $\lambda(r)=\ln(1+ar^2+br^4)$…

General Relativity and Quantum Cosmology · Physics 2020-06-03 Suparna Biswas , Dibyendu Shee , B. K. Guha , Saibal Ray

We investigate the rotational properties of self-bound strange quark stars using two representative quark matter equations of state (EOS): the vector MIT bag model and the density-dependent quark mass (DDQM) model. Through…

High Energy Astrophysical Phenomena · Physics 2026-05-08 Adamu Issifu , Andreas Konstantinou , Franciele M. da Silva , Tobias Frederico

We calculate the equation of state of strange quark matter and the interior structure of strange quark stars in a Dyson-Schwinger quark model within rainbow or Ball-Chiu vertex approximation. We emphasize constraints on the parameter space…

Solar and Stellar Astrophysics · Physics 2017-03-28 H. Chen , J. -B Wei , H. -J. Schulze

We review the physics of doubly-heavy baryons $QQq$ and tetraquarks $QQ\bar q\bar q$. For the latter, the stability is reached for large enough mass ratio $M/m$, even when spin forces and color mixing are neglected. It is thus customarily…

High Energy Physics - Phenomenology · Physics 2018-12-11 Jean-Marc Richard , Alfredo Valcarce , Javier Vijande

We have performed the leading order perturbative calculation to obtain the equation of state (EoS) of the strange quark matter (SQM) at zero temperature under the magnetic field B = 10^18 G. The SQM comprises two massless quark flavors (up…

High Energy Physics - Phenomenology · Physics 2022-04-11 J. Sedaghat , S. M. Zebarjad , G. H. Bordbar , B. Eslam Panah

Compact relativistic stars allow us to study the nature of matter under extreme conditions, probing regions of parameter space that are otherwise inaccessible. Nuclear theory in this regime is not well constrained: one key issue is whether…

Astrophysics · Physics 2008-11-26 Anna L. Watts , Sanjay Reddy

The strange quark star is investigated within the enlarged SU(3) Nambu-Jona-Lasinio (NJL). The stable quark star exists till maximal configutation with rho_m=3.1, 10^15, g/cm^3 with M_m=1.61, M_Sun and R_m=8.74, km is reached. Strange…

Nuclear Theory · Physics 2008-11-26 R. Manka , I. Bednarek , G. Przybyla

The surface tension of quark matter in a strong magnetic field is investigated using a geometric approach. The interface between the hadronic phase and quark phase is determined by the Maxwell construction of the first-order transition.…

High Energy Physics - Phenomenology · Physics 2025-03-14 Yu-Ying He , Xin-Jian Wen

We study stable spheroidal configurations of magnetized Strange Stars using an axially symmetric metric in spherical coordinates that uses a gamma parameter to link the anisotropy in the Equation of State due to the magnetic field with the…

High Energy Astrophysical Phenomena · Physics 2021-04-28 Diana Alvear Terrero , Samantha López Pérez , Daryel Manreza Paret , Aurora Pérez Martínez , Gretel Quintero Angulo

The present work is connected with the investigation of the origin and properties of compact astrophysical objects endowed with strangeness, with the objective of finding out their relevance in the formation and evolution of the universe.…

High Energy Astrophysical Phenomena · Physics 2014-08-28 Shibaji Banerjee

The structure and stability of quark stars (QSs) made of interacting quark matter are discussed in this study, taking color superconductivity and perturbative QCD corrections into account. By combining this EoS with the…

High Energy Physics - Theory · Physics 2025-06-12 Takol Tangphati , İzzet Sakallı , Ayan Banerjee , Anirudh Pradhan

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…

General Relativity and Quantum Cosmology · Physics 2019-11-06 Debabrata Deb , Sergei V. Ketov , Maxim Khlopov , Saibal Ray

The dynamical stability of strange-dwarf hybrid stars and strange planets, constituted by strange-quark-matter cores and dilute-nuclear-matter crusts, is revisited by analyzing the fundamental mode eigenfrequencies of the radial oscillation…

Nuclear Theory · Physics 2023-11-09 Victor P. Goncalves , Jose C. Jimenez , Lucas Lazzari

In this paper, we investigated the thermodynamic properties of strange quark matter using Nambu-Jona-Lasinio (NJL) model at finite temperatures where we considered the dynamical mass as the effective interaction between quarks. By…

Nuclear Theory · Physics 2019-05-22 G. H. Bordbar , R. Hosseini , F. Kayanikhoo , A. Poostforush

We employ the MIT bag model with density-dependent bag constant for the equation of state (EOS) to estimate the gravitational mass and Keplerian frequency of rapidly rotating strange quark stars (SQS). In a companion paper we discuss the…

High Energy Astrophysical Phenomena · Physics 2026-01-15 Fatemeh Kayanikhoo , Mateusz Kapusta , Miljenko Čemeljić , Wlodek Kluzniak , Leszek Zdunik

In this study, we explore several new characteristics of a static anisotropic hybrid star with strange quark matter (SQM) and ordinary baryonic matter (OBM) distribution. Here, we use the MIT bag model equation of state to connect the…

General Relativity and Quantum Cosmology · Physics 2023-07-25 Piyali Bhar , Sneha Pradhan , Adnan Malik , P. K. Sahoo

We study the interface effects in strangelets adopting mean-field approximation (MFA). Based on an equivparticle model, the linear confinement and leading-order perturbative interactions are included with density-dependent quark masses. By…

High Energy Physics - Phenomenology · Physics 2018-09-12 Cheng-Jun Xia , Guang-Xiong Peng , Ting-Ting Sun , Wan-Lei Guo , Ding-Hui Lu , Prashanth Jaikumar

This work analyses the hydrostatic equilibrium configurations of strange stars in a non-minimal geometry-matter coupling (GMC) theory of gravity. Those stars are made of strange quark matter, whose distribution is governed by the MIT…

General Relativity and Quantum Cosmology · Physics 2022-12-21 G. A. Carvalho , R. Lobato , P. H. R. S. Moraes , D. Deb , M. Malheiro

The equation of state of strange matter build of the u,d,s quarks in the framework of the MIT bag model is studied. The scaling relations with bag constant are discussed and applied to the determination of maximum frequency of a particle in…

Astrophysics · Physics 2011-05-23 J. L. Zdunik
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