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arXiv · 1908.01325

On the stability of two-flavor and three-flavor quark stars

Qianyi Wang·Tong Zhao·Hongshi Zong
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Abstract

Following our recenty proposed self-consistent mean-field approximation approach, we have done some researches on the chiral phase transition of strong interaction matter within the framework of Nambu-Jona-Lasinio (NJL) model. The chiral susceptibility and equation of state (EOS) are computed in this work for both two-flavor and three-flavor quark matter for contrast. The Pauli-Villars scheme, which can preserve gauge invariance, is used in this paper. Moreover, whether the three-flavor quark matter is more stable than the two-flavor quark matter or not in quark stars is discussed in this work. In our model, when the bag constant are the same, the two-flavor quark matter has a higher pressure than the three-flavor quark matter, which is different from what Witten proposed in his pioneering work.

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Qianyi Wang, Tong Zhao, Hongshi Zong. 2019-08-04. On the stability of two-flavor and three-flavor quark stars. https://arxiv.org/abs/1908.01325

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