【预告】陕西师范大学基金委理论物理平台学术交流邀请报告 | 兰州大学李峰研究员
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主题：“Tiny galaxies” from “little bang”——Vortical fluid flow field in the heavy ion collisions
主讲人：李峰 研究员
单位：兰州大学
主办方：陕西师范大学国家基金委理论物理学术交流平台
报告摘要
We show, by solving the linearized Vlasov equations, that in the presence of an attractive density dependent vector, or tensor, mean field potential, under a portion of the spinodal unstable phase region where the attractions among the quarks are more dominant, the transverse modes, i.e., the fluctuations of the current densities perpendicular to the wave vector, are activated due to relativity. In particular, the current densities in both the transverse directions oscillate with the same frequency, indicating the existence of the spontaneous rotations of the dense clusters. These rotating clusters would certainly create a local vortical flow field which, according to chiral (or spin) vortical effect, leads to the macroscopic separation of the axial charges or spins due to the spin-orbital interactions. Hence, for the first time, the connection between the axial charge or spin in-homogeneity and the first-order phase transition is proposed.
主讲人介绍
李峰，兰州大学研究员。2016年在Texas A&M University获得物理学博士学位，之后去Frankfurt Institute for Advanced Studies做博后，于2019年加盟兰州大学。其研究兴趣包括：重离子碰撞中奇异粒子的亚阈值产额、夸克-胶子等离子体到强子气体的相变研究、反常洛伦茨变换与手征涡旋效应、相对论性重离子碰撞的输运模型模拟等。
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