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This paper gives an overview of the properties of all possible equilibrium sequences of compact strange-matter stars with nuclear crusts, which range from strange stars to strange dwarfs. In contrast to their non-strange counterparts,…

Astrophysics · Physics 2007-05-23 F. Weber , Ch. Schaab , M. K. Weigel , N. K. Glendenning

Since the incident nuclei in heavy-ion collisions do not carry strangeness, the global net strangeness of the detected hadrons has to vanish. We investigate the impact of strangeness neutrality on the phase structure and thermodynamics of…

High Energy Physics - Phenomenology · Physics 2020-04-03 Wei-jie Fu , Jan M. Pawlowski , Fabian Rennecke

The assumption underlying the existence of quark stars is based on the Bodmer-Witten conjecture. These authors have claimed that it is possible that the interior of a neutron-like star does not consist primarily of hadrons, but rather of…

Nuclear Theory · Physics 2013-08-12 J. R. Torres , D. P. Menezes , V. Dexheimer

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

The fact that strange sea quarks are abundant in the nucleons, but with zero net strangeness, is of great importance for understanding the nature of matter condensed by the strong interaction, particularly in the context of the ``gigantic…

High Energy Astrophysical Phenomena · Physics 2025-09-23 Haoyang Qi , Renxin Xu

Neutron stars contain matter in one of the densest forms found in the Universe. This feature, together with the unprecedented progress in observational astrophysics, makes such stars superb astrophysical laboratories for a broad range of…

Astrophysics · Physics 2007-05-23 F. Weber , R. Negreiros , P. Rosenfield

If the deconfinement phase transformation of strongly interacting matter is of first-order and the expanding chromodynamic matter created in a high-energy nuclear collision enters the corresponding region of phase coexistence, a spinodal…

Nuclear Theory · Physics 2014-11-18 Volker Koch , Abhijit Majumder , Jorgen Randrup

Appropriate combinations of up to fourth order cumulants of net strangeness fluctuations and their correlations with net baryon number and electric charge fluctuations, obtained from lattice QCD calculations, have been used to probe the…

The exact composition of a specific class of compact stars, historically referred to as "neutron stars", is still quite unknown. Possibilities ranging from hadronic to quark degrees of freedom, including self-bound versions of the latter…

Solar and Stellar Astrophysics · Physics 2013-09-10 M. G. B. de Avellar , J. E. Horvath , L. Paulucci

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

Dense hadronic matter at low temperature is expected to be in crystal and at high density make a transition to a {\em chirally restored but color-confined} state which is a novel phase hitherto unexplored. This phase transition is predicted…

High Energy Physics - Phenomenology · Physics 2010-04-06 Byung-Yoon Park , Joon-Il Kim , Mannque Rho

Building on, and extending, the result of a higher-order in-medium chiral perturbation theory combined with renormalization group arguments and a variety of observations of the vector manifestation of Harada-Yamawaki hidden local symmetry…

High Energy Physics - Phenomenology · Physics 2016-09-06 G. E. Brown , C. -H. Lee , H. -J. Park , M. Rho

An effective model with constituent quarks as fundamental degrees of freedom is used to predict the relative strangeness production pattern in both high energy elementary and heavy ion collisions. The basic picture is that of the…

High Energy Physics - Phenomenology · Physics 2009-11-07 F. Becattini , G. Pettini

It was conjectured that the basic units of the ground state of bulk strong matter may be strange-clusters called strangeons, and they can form self-bound strangeon stars that are highly compact. Strangeon stars can develop a strange quark…

Nuclear Theory · Physics 2024-01-09 Chen Zhang , Yong Gao , Cheng-Jun Xia , Renxin Xu

The core of neutron-star matter is supposed to be at a much higher density than the normal nuclear matter density for which various possibilities have been suggested such as, for example, meson or hyperon condensation and/or deconfined…

High Energy Astrophysical Phenomena · Physics 2011-10-07 Kyungmin Kim , Hyun Kyu Lee , Mannque Rho

After a brief non technical introduction of the basic properties of strange quark matter (SQM) in compact stars, we consider some of the late important advances in the field, and discuss some recent astrophysical observational data that…

General Relativity and Quantum Cosmology · Physics 2016-11-15 I. Bombaci

The strong interactions at low energy scales determine the state of the supranuclear matter in the pulsar-like compact objects. It is proposed that the bulk strong matter could be composed of strangeons, which are quark clusters with a…

General Relativity and Quantum Cosmology · Physics 2021-11-25 Yong Gao , Xiao-Yu Lai , Lijing Shao , Ren-Xin Xu

The kaon, the lightest hadron containing a strangeness quark, is very peculiar. It is a Nambu-Goldstone boson, but significantly heavier than the pion. As a result, its interaction with a matter particle, such as the nucleon or a…

High Energy Physics - Phenomenology · Physics 2026-03-24 Li-Sheng Geng , Ming-Zhu liu , Jia-Ming Xie

Densities in compact stars may be such that quarks are no longer confined in hadrons, but instead behave as weakly interacting particles. In this regime perturbative calculations are possible. Yet, due to high pressures and an attractive…

High Energy Physics - Phenomenology · Physics 2009-03-24 Sjoerd Hardeman

The calculation of the strangeness content of the nucleon and its experimental verification is a fundamental step in establishing non-perturbative QCD as the correct theory describing the structure of hadrons. It holds a role in QCD…

Nuclear Theory · Physics 2010-01-15 A. W. Thomas