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Perturbative Quantum Chromodynamics (pQCD) corrections and color superconductivity predict that strongly interacting matter can reveal new physical phenomena under extreme conditions. Taking into account these interaction effects, we…

General Relativity and Quantum Cosmology · Physics 2023-12-15 Juan M. Z. Pretel , Takol Tangphati , Ayan Banerjee , Anirudh Pradhan

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 anisotropic compact stars comprising two non-interacting fluids: quark matter and condensed dark matter. Using the MIT Bag model equation of state for quark matter and Bose-Einstein Condensate equation of state for dark…

General Relativity and Quantum Cosmology · Physics 2025-05-28 G. Panotopoulos , A. Rincón , I. Lopes

Lattice QCD studies of the thermodynamics of the hot quark-gluon plasma (QGP) demonstrate the importance of accounting for the interactions of quarks and gluons, if one wants to investigate the phase structure of strongly interacting…

Nuclear Theory · Physics 2014-02-27 Eduardo S. Fraga , Aleksi Kurkela , Aleksi Vuorinen

We investigate the properties of non-rotating, electrically charged strange quark stars in four-dimensional Einstein-Maxwell theory. For quark matter we adopt the well-motivated quantum chromodynamics (QCD) equation-of-state, while for the…

General Relativity and Quantum Cosmology · Physics 2022-05-04 Grigoris Panotopoulos , Takol Tangphati , Ayan Banerjee

In the present paper, we treat the problem of the existence of quark stars (QSs) for selected homogeneous and unpaired charge-neutral $3$-flavor interacting quark matter with $\mathcal{O}(m_s^4)$ corrections equations of state (EoS). Using…

General Relativity and Quantum Cosmology · Physics 2021-06-02 Grigoris Panotopoulos , Takol Tangphati , Ayan Banerjee , M. K. Jasim

Within the framework of Einstein's General Relativity we study strange quark stars assuming an interacting equation-of-state. Taking into account the presence of anisotropies in a sphere made of ultra dense matter, we employ the formalism…

General Relativity and Quantum Cosmology · Physics 2023-03-09 Angel Rincon , Grigoris Panotopoulos , Ilidio Lopes

We investigate anisotropic quark stars within the context of energy-momentum squared gravity (EMSG), assuming the internal composition consists of homogeneous, charge-neutral 3-flavor interacting quark matter with ${\cal O}(m_s^4)$…

General Relativity and Quantum Cosmology · Physics 2023-10-02 Qian Li , Xianming Liu , Ruijun Tang , Jiayong Xiao

The influence of the anisotropy in the equilibrium and stability of strange stars is investigated through the numerical solution of the hydrostatic equilibrium equation and the radial oscillation equation, both modified from their original…

High Energy Astrophysical Phenomena · Physics 2017-06-30 José D. V. Arbañil , M. Malheiro

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

The collective modes of QCD at temperatures and densities above its phase-transition are analyzed for isotropic systems as well as for systems having an anisotropy in momentum-space using the HTL approximation. For isotropic systems,…

High Energy Physics - Phenomenology · Physics 2007-05-23 Paul Romatschke

(Abridged) Neutron stars (NSs), the densest known objects composed of matter, provide a unique laboratory to probe whether strange quark matter is the true ground state of matter. We investigate the parameter space of the equation of state…

High Energy Astrophysical Phenomena · Physics 2025-08-29 João V. Zastrow , Jonas P. Pereira , Rafael C. R. de Lima , Jorge E. Horvath

In this paper, we study the physical characteristics of anisotropic spherically symmetric quark star candidates for $R+2\sigma T$ gravity model, where $R$, $\sigma$ and $T$ depict scalar curvature, coupling parameter, and the trace of the…

General Relativity and Quantum Cosmology · Physics 2020-01-08 M. Sharif , Arfa Waseem

Interacting quark stars, which are entirely composed of interacting quark matter including perturbative QCD corrections and color superconductivity, can meet constraints from various pulsar observations. In realistic scenarios, pressure…

Nuclear Theory · Physics 2024-10-11 Juan M. Z. Pretel , Chen Zhang

In an early work, we applied a QCD-based equation of state to the study of the stellar structure of self-bound strange stars, obtaining sequences with maximum masses larger than two solar masses and radii ranging from 8 to 12 Km. In this…

Nuclear Theory · Physics 2021-10-13 M. B. Albino , R. Fariello , F. S. Navarra

We have studied strange quark stars in the framework of the MIT bag model, allowing the bag parameter B to depend on the density of the medium. We have also studied the effect of Cooper pairing among quarks, on the stellar structure.…

Astrophysics · Physics 2009-11-10 Nirvikar Prasad , R. S. Bhalerao

A polytropic quark star model is suggested in order to establish a general framework in which theoretical quark star models could be tested by observations. The key difference between polytropic quark stars and the polytropic model studied…

Astrophysics · Physics 2009-06-23 X. Y. Lai , R. X. Xu

Explosive astrophysical systems, such as supernovae or compact star binary mergers, provide conditions where strange quark matter can appear. The high degree of isospin asymmetry and temperatures of several MeV in such systems may cause a…

High Energy Astrophysical Phenomena · Physics 2014-11-20 I. Sagert , T. Fischer , M. Hempel , G. Pagliara , J. Schaffner-Bielich , F. -K. Thielemann , M. Liebendörfer

Perturbative Quantum Chromodynamics corrections and the colour superconductivity indicate that strongly interacting matter can manifest unique physical behaviours under extreme conditions. Motivated by this notion, we investigate the…

General Relativity and Quantum Cosmology · Physics 2025-01-22 Debadri Bhattacharjee , Koushik Ballav Goswami , Pradip Kumar Chattopadhyay

This work discuses the effect of the QCD coupling constant ($\alpha_c$) on various physical properties of compact stars in the framework of the Tolman IV potential admitting the equation of state of MIT bag model with nonzero value of mass…

General Relativity and Quantum Cosmology · Physics 2024-12-17 R Roy , K B Goswami , P K Chattopadhyay , A Saha
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