Properties of color-flavor locked matter in a quasiparticle model
Peng-Cheng Chu (The Research Center for Theoretical Physics, Science School, Qingdao University of Technology, Qingdao, 266033, China); Qian Cao (School of Information and Control Engineering, Qingdao University of Technology, Qingdao, 266033, China); He Liu (The Research Center for Theoretical Physics, Science School, Qingdao University of Technology, Qingdao, 266033, China); Xiao-Hua Li (School of Nuclear Science and Technology, University of South China, Hengyang, 421001, China, Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment, University of South China, Hengyang, 421001, China); Min Ju (College of Science, China University of Petroleum (East China), Qingdao, 266580, China); et al - Show all 7 authors
We investigate the thermodynamical properties of color-flavor locked (CFL) quark matter at zero temperature, finite temperature, and strong magnetic field by using quasiparticle model. We find that considering CFL quark phase can significantly change the equation of state (EOS) as well as the properties of quark matter in quark stars (QSs) at finite temperature or under magnetic field within quasiparticle model. In particular, our results have shown that we can provide the large QSs within CFL quark phase from quasiparticle model by satisfying both the upper limit of $$\Lambda _{1.4}<800$$ for the low-spin priors of 1.4 solar mass pulsars from GW170817 and the new estimates of the mass-radius region from PSR J0740 + 6620, PSR J0030 + 0451, HESS J1731-347, and 4U 1702-429, which cannot be obtained by considering the QSs with SQM within quasiparticle model.
