Kai-Jia Sun(孙凯佳)

I study the emergent phenomena of strongly interacting hot and dense QCD matter. In 2017, we have proved that the nucleon density fluctuations in the fireball created in high energy heavy-ion collisions can be uniquely determined by measuring the yields of light nuclei including proton, deuteron and triton. In 2018, we propose that there should be a double-peak structure of baryon density fluctuation as a function of collision energy, with the high energy one caused by critical enhancement of correlation length and the lower energy one caused by the spinodal instability in the first-order phase transitions. This new scenario enables us to more precisely and unambiguously identify the QCD critical point with the coming data collected at facilities like LHC, RHIC, FAIR, NICA and ect.