BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Weak magnetic field effect in quark-gluon plasma DTSTART;VALUE=DATE-TIME:20250422T023000Z DTEND;VALUE=DATE-TIME:20250422T033000Z DTSTAMP;VALUE=DATE-TIME:20260417T213500Z UID:indico-event-25866@indico.ihep.ac.cn DESCRIPTION:Speakers: Li Yan (Fudan University)\nThere must be electromag netic fields created during high-energy heavy-ion collisions. However\, as the quark-gluon plasma (QGP) starts to evolve hydrodynamically (around 1f m/c)\, these fields become very likely weak comparing to the energy scales of the strong interaction. In this talk\, I will introduce the weak magne tic effect in the standard hydrodynamic formulation\, which emerges in QGP close to local thermal equilibrium as the dissipative correction to the q uark phase space distribution function. Although it is a small correction\ , we found that the weak magnetic field can be crucial to the anisotropic emission of direct photons (the direct photon puzzle)\, the polarization o f thermal dilepton from QGP\, and the sign change of local Lambda hyperon polarization. \n\nBrief introduction about the speaker:\nLi Yan is cu rrently an Assistant Professor at the Institute of Modern Physics\, Fudan University. He obtained his PhD in 2013 from Stony Brook University. After ward\, he joined the Institut de Physique Théorique (IPhT) at Saclay\, Fr ance\, in 2013\, and later the Department of Physics at McGill University in 2016 as a postdoctoral researcher. His research focuses on relativistic hydrodynamics and its application to quark-gluon plasma in high-energy he avy-ion collisions\, the electromagnetic properties of quark-gluon plasma\ , and non-equilibrium systems.\n\n*请线下参加报告的外单位老师 、同学注册时填写个人信息（中文姓名、身份证号码及 手机号码），用于预约进入物理学院。\nhttps://indico.ihep.a c.cn/event/25866/ LOCATION:B105 (CHEP) URL:https://indico.ihep.ac.cn/event/25866/ END:VEVENT END:VCALENDAR