学术报告：Theoretical Study of Chiral anomalous Transports
发布时间:2019-12-16 浏览次数:
Theoretical Study of Chiral anomalous Transports
报告人👨🦳：侯德富教授 （华中师范大学物理科学与技术学院）
报告时间🏄🏿♀️：12月17日(周二) 9:30
报告地点🤽🏿：化学西楼201会议室
报告简介🧙♀️： QCD phase structure under new extremal conditions and Anomaly induced transport phenomena in systems with chiral fermions have attracted wide interests ranging from high energy physics to Astrophysics and condensed matter physics. Because of the non-renormalization theorem of chiral anomalies, it is normally expected that the chiral magnetic (vortical) currents are free from higher order corrections. In this talk, I will present our study on the radiative corrections to chiral magnetic current at both zero and nonzero temperature. Our motivation is a radiative correction to the matrix element of the anomalous Ward identity in massless QED stemming from a three-loop diagram where the two photons coming from the one-loop anomalous triangle are re-scattered. Through the interplay between the Ward identity and the infrared subtlety of the fermion loop integral, we obtain the 3-loop corrections to the chiral magnetic current at zero temperature. At a nonzero temperature, the infrared subtlety disappeared in a static magnetic field and the three-loop diagram does not contribute to the chiral magnetic current any more. The generalization to all orders of the massless QED and the QCD corrections are discussed. I will also present possible higher-order corrections to the chiral veritcal effect (CVE). The CME calculation with Lattice and wigner function will also be studied
