Properties of color-flavor locked strange quark matter and strange stars in a new quark mass scaling  

作　　者：CHANG Qian CHEN ShiWu PENG GuangXiong XU JianFeng 

机构地区：[1]College of Physics,University of Chinese Academy of Sciences [2]Theoretical Physics Center for Science Facilities,Institute of High Energy Physics

出　　处：《Science China(Physics,Mechanics & Astronomy)》2013年第9期1730-1734,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：support from the National Natural Science Foundation of China (Grant Nos.11135011 and 11045006);the Key Project of Chinese Academy of Sciences (No.Y12A0A0012)

摘　　要：Considering the effect of one-gluon-exchange interaction between quarks,the color-flavor locked strange quark matter and strange stars are investigated in a new quark mass density-dependent model.It is found that the color-flavor locked strange quark matter can be more stable if the one-gluon-exchange effect is included.The lower density behavior of the sound velocity in this model is different from the previous results.Moreover,the new equation of state leads to a heavier acceptable maximum mass,supporting the recent observation of a compact star mass as large as about 2 times the solar mass.Considering the effect of one-gluon-exchange interaction between quarks,the color-flavor locked strange quark matter and strange stars are investigated in a new quark mass density-dependent model.It is found that the color-flavor locked strange quark matter can be more stable if the one-gluon-exchange effect is included.The lower density behavior of the sound velocity in this model is different from the previous results.Moreover,the new equation of state leads to a heavier acceptable maximum mass,supporting the recent observation of a compact star mass as large as about 2 times the solar mass.

关 键 词：color-flavor locked strange quark matter one-gluon-exchange effect 

分 类 号：O572.243[理学—粒子物理与原子核物理]