Phase diagram of two-color QCD matter at finite baryon and axial isospin densities  

作　　者：Jingyi Chao 巢静宜(Institute of Modern Physics, Chinese Academy of Sciences)

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China

出　　处：《Chinese Physics C》2020年第3期129-136,共8页中国物理C（英文版）

基　　金：Supported by the NSFC(11605254);Major State Basic Research Development Program in China(2015CB856903)

摘　　要：We study the two-color QCD matter with two fundamental quark flavors using the chiral perturbation theory and the Nambu-Jona-Lasinio(NJL)model.The effective Lagrangian is derived in terms of mesons and baryons,i.e.diquarks.The low lying excitations lie in the extended SU(4)flavor symmetry space.We compute the leading order terms of the Lagrangian as a function of the baryon and axial isospin densities.After numerically solving the gap equations in the two-color NJL model,the phase diagram is obtained in the μ−ν5 plane.We study the two-color QCD matter with two fundamental quark flavors using the chiral perturbation theory and the Nambu-Jona-Lasinio（NJL） model. The effective Lagrangian is derived in terms of mesons and baryons,i.e. diquarks. The low lying excitations lie in the extended SU（4） flavor symmetry space. We compute the leading order terms of the Lagrangian as a function of the baryon and axial isospin densities. After numerically solving the gap equations in the two-color NJL model, the phase diagram is obtained in the μ-ν5 plane.

关 键 词：two-color QCD DIQUARKS chiral perturbation theory axial isospin density NJL model 

分 类 号：O413[理学—理论物理] O572.33[理学—物理]