Speaker: Ms. Xiaoyu Dong (董晓宇)

Time: 13:00-13:30, 29 April 2021 (Thursday) (Beijing time)

Venue: B414, Lijiao Building, BNU at Zhuhai


In lattice QCD, the standard nonperturbative tool for quantum chromodynamics, the numerical sign problem may appear when computing the expectation of observables. The complex Langevin method (CLM) is applied to mitigating the problem. Based on the gauge theory, gauge cooling technique is an effective way to stabilize CLM by solving a minimization problem. In the one-dimensional periodic model, the exact solution can be found. And the alternating descent method is proposed for general case, which shows better performance than current method.

About Ms. Dong

Xiaoyu Dong is now a Ph.D. student in the Academy of Mathematics and Systems Science, Chinese Academy of Sciences, under the supervision of Prof. Yana Di. In 2017, she graduated from Beijing Normal University, and in the same year, she was recommended to the Chinese Academy of Sciences for postgraduate study. Her current research direction is the path integral problem in quantum chromodynamics.