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We derive scaling laws that connect certain macroscopic observables of strange quark stars with key microscopic properties of self-bound quark matter, such as the energy per baryon at zero pressure and the strength of repulsive…

Nuclear Theory · Physics 2025-06-26 G. Lugones , A. G. Grunfeld

We discuss the properties of strange matter, in particular the minimum of the energy per baryon number as a function of the strangeness fraction. We utilize both the MIT bag model and the Color Dielectric Model and compare the energy per…

High Energy Physics - Phenomenology · Physics 2011-07-19 W. M. Alberico , A. Drago , C. Ratti

We investigate the surface tension $\sigma$ and the curvature energy $\gamma$ of quark matter drops in the MIT bag model with vector interactions. Finite size corrections to the density of states are implemented by using the multiple…

Nuclear Theory · Physics 2021-12-01 G. Lugones , A. G. Grunfeld

We study cold strange quark stars employing an enhanced version of the quark-mass density-dependent model which incorporates excluded volume effects to address non-perturbative QCD repulsive interactions. We provide a comparative analysis…

Nuclear Theory · Physics 2024-05-29 G. Lugones , A. G. Grunfeld

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…

General Relativity and Quantum Cosmology · Physics 2019-05-01 Debabrata Deb , Sergei V. Ketov , S. K. Maurya , Maxim Khlopov , P. H. R. S. Moraes , Saibal Ray

The cooling of a young bare strange star is studied numerically by solving the equations of energy conservation and heat transport for both normal and superconducting strange quark matter inside the star. We show that the thermal luminosity…

Astrophysics · Physics 2009-07-09 Dany Page , Vladimir V. Usov

Strangeness plays an important role in the study of quark matter since it indicates the rate at which new particles are being produced and therefore provides information about the degree of chemical equilibration reached in heavy ion…

Nuclear Theory · Physics 2007-05-23 J. Cleymans

Astrophysicists distinguish between three different types of compact stars. These are white dwarfs, neutron stars, and black holes. The former contain matter in one of the densest forms found in the Universe. This feature, together with the…

Astrophysics · Physics 2007-05-23 Fridolin Weber , Andreu Torres i Cuadrat , Alexander Ho , Philip Rosenfield

For almost twenty years the effects of a nonzero strange quark mass on the equation of state of cold and dense QCD were considered to be negligible, thereby yielding only minor corrections to the mass-radius diagram of compact stars. By…

High Energy Physics - Phenomenology · Physics 2009-11-11 Eduardo S. Fraga

This thesis investigates compact astrophysical objects within modified theories of gravity, focusing on neutron stars and strange stars. The work studies their internal structure, equilibrium, and stability in gravitational frameworks based…

General Relativity and Quantum Cosmology · Physics 2026-05-26 Sneha Pradhan

The state of cold bulk matter at around nuclear density depends on the fundamental strong interaction between quarks at low-energy scale, so-called non-perturbative quantum chromo-dynamics. Such kind of matter is conjectured to be condensed…

High Energy Astrophysical Phenomena · Physics 2015-07-28 Renxin Xu

We present a mechanism that may seed compact stellar objects with stable lumps of quark matter, or {\it strangelets}, through the self-annihilation of gravitationally accreted WIMPs. We show that dark matter particles with masses above a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 M. A. Perez-Garcia , J. Silk , J. R. Stone

The surface tension of quark matter plays a crucial role for the possibility of quark matter nucleation during the formation of compact stellar objects, because it determines the nucleation rate and the associated critical size. However,…

High Energy Physics - Phenomenology · Physics 2013-05-30 Marcus B. Pinto , Volker Koch , Jorgen Randrup

In this work we study, within the framework of Cowling approximation, the effect of the electric charge on the gravitational wave frequency of fluid oscillation modes of strange quark stars. For this purpose, the dense matter of the stellar…

Solar and Stellar Astrophysics · Physics 2024-11-15 José D. V. Arbañil , César H. Lenzi , Juan M. Z. Pretel , César O. V. Flores

The strangeness content of hadronic matter is studied in a string-flip model that reproduces various aspects of the QCD-inspired phenomenology, such as quark clustering at low density and color deconfinement at high density, while avoiding…

Nuclear Theory · Physics 2009-11-07 G. Toledo Sanchez , J. Piekarewicz

This paper gives an brief overview of the structure of hypothetical strange quarks stars (quark stars, for short), which are made of absolutely stable 3-flavor strange quark matter. Such objects can be either bare or enveloped in thin…

Solar and Stellar Astrophysics · Physics 2015-06-11 Fridolin Weber , Milva Orsaria , Hilario Rodrigues , Shu-Hua Yang

The quasiparticle model is employed to investigate the quark matter at finite chemical potential. The effective bag constant is derived to be dependent on both the chemical potential and the magnetic field. The self-consistent…

High Energy Physics - Phenomenology · Physics 2025-01-14 Xin-Jian Wen , Xiao-Wen Jiang

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…

High Energy Astrophysical Phenomena · Physics 2020-10-14 Shu-Hua Yang , Chun-Mei PI , Xiao-Ping Zheng , Fridolin Weber

We investigate the dynamical behavior of strange quark matter (SQM) objects, such as stars and planets, when subjected to radial oscillations induced by tidal interactions in stellar systems. Our study demonstrates that SQM objects can…

High Energy Astrophysical Phenomena · Physics 2025-07-16 Joanna Jałocha , Łukasz Bratek

Strange quark matter, which is composed of u, d, and s quarks, could be the true ground of matter. According to this hypothesis, compact stars may actually be strange quark stars, and there may even be stable strange quark dwarfs and…

High Energy Astrophysical Phenomena · Physics 2022-01-11 Xu Wang , Abudushataer Kuerban , Jin-Jun Geng , Fan Xu , Xiao-Li Zhang , Bing-Jun Zuo , Wen-Li Yuan , Yong-Feng Huang