Hybrid strangeon stars

作者：Chen Zhang, Yong Gao, Cheng-Jun Xia, Renxin Xu · 发表于：Physical review. D/Physical review. D. · 年份：2023 · DOI：10.1103/physrevd.108.123031 · 被引用次数：15 · 研究领域：Pulsars and Gravitational Waves Research、Cold Atom Physics and Bose-Einstein Condensates、Stellar, planetary, and galactic studies

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 matter (SQM) core at high densities, particularly in the color-flavor-locking phase, yielding a branch of hybrid strangeon stars. We explore the stellar structure and astrophysical implications of hybrid strangeon stars. We find that hybrid strangeon stars can meet various astrophysical constraints on pulsar masses, radii, and tidal deformabilities. Finally, we show that the strangeon-SQM mixed phase is not preferred if the charge-neutrality condition is imposed at the strangeon-SQM transition region.