Speaker
Description
The QCD phase transition signals at RHIC are expected to be observed via the measurement of net-proton's high order cumulants [1]. In this talk, we will present our recent study of dynamical effects on the high order cumulants of the QCD chiral field in a system with finite-size. We find much stronger memory effects on the first-order phase transition side than on the crossover side. Besides, the dynamical cumulants at the hypothetical freeze-out line present rich non-monotonic structures, which is suggestive to the explanation of the experimental data [2].
Further, within the same dynamical framework, we also study the dynamical behaviors of the newly developed first-order phase transition crirerion $\Delta$ [3]. Related factors such as the phase transition scenarios, the initial temperature, the volume size, the relaxation rate, as well as different evolution trajectories are discussed seperately [4].
[1] J. Adamet al. (STAR Collaboration), Phys. Rev. Lett.126,092301 (2021).
[2] L. Jiang, H. St ̈ocker and J. H. Zheng, Eur. Phys. J. C 83 (2023) no.2, 117.
[3] Y. Lu, F. Gao, X. Luo, L. Chang and Y. x. Liu, arXiv:2211.03401.
[4] L. Jiang, F. Gao, H. Song, and Y. x. Liu, in preparations.
| Theory / experiment | Theory |
|---|
