On the morning of May 22nd, the [NanGaoShi·Physics Lecture] series lecture of the School of Physical Science and Technology, Nanjing Normal University, was successfully held in Room 437 of the Xingjian Building. Professor Yu Fusheng, a renowned scholar from Lanzhou University, was invited to visit and give an academic lecture entitled "A New Theoretical Method for Non-perturbative QCD: The Inverse Problem Method" for the faculty and students of our school. This lecture was presided over by Professor Rui-Lin Zhu, many teachers and graduate students from related majors participated in this academic activity.

In this report, Professor Yu deeply explored the non-perturbative QCD problem, which is a major challenge in the field of physics. Facing the tremendous theoretical challenges in calculating non-perturbative physical quantities, Professor Yu's team took an original approach and proposed a brand-new calculation technique—the "inverse problem method". Starting from the dispersion relations in quantum field theory, this method ingeniously extracts non-perturbative physical quantities in the low-energy region through perturbative calculations in the high-energy region, successfully circumventing many bottlenecks found in traditional calculation methods.

During the presentation, Professor Yu emphasized the core highlight of this analytical framework: the inverse problem method is not only entirely based on rigorous mathematical theory and logic, but it is also a theoretical approach capable of systematically improving calculation precision. He detailed the overall theoretical framework of the inverse problem method and vividly demonstrated its practical applications in specific physical scenarios. This innovative discovery undoubtedly provides an extremely sharp new probe for exploring and resolving complex non-perturbative QCD problems.

At the end of the report, Professor Yu summarized the significant advantages of this inverse problem method when dealing with non-perturbative physical quantities. The successful application of this original analytical method not only provides a new perspective for high-precision calculations but will also greatly encourage the extensive application of this framework in more complex theoretical physics research in the future. In the interactive session, the attending faculty and students engaged in in-depth exchanges and enthusiastic discussions with Professor Yu regarding cutting-edge topics such as dispersion relations, systematic precision improvement, and related physical applications. This academic report not only broadened the academic horizons of the researchers but also laid a solid foundation for future interdisciplinary theoretical collaboration.

Speaker Biography:

Yu Fusheng is a Professor and Doctoral Supervisor at Lanzhou University. From 2008 to 2013, he studied at the Institute of High Energy Physics, Chinese Academy of Sciences, where he earned his Ph.D. in Science. From 2011 to 2012, he participated in a joint training program at Paris-Sud University (Paris XI). Since 2013, he has served successively as an Associate Professor and Professor in the School of Nuclear Science and Technology at Lanzhou University. He is engaged in theoretical research in particle physics; he proposed the optimal detection processes that guided experiments to the first discovery of doubly charmed baryons, and accurately predicted CP violation in charm meson decays and bottom baryon decays. He was selected as the National Young Talent Program and Gansu Top Leading Talent. Awarded the First Prize of the Most Influential Paper by the Chinese Physical Society. Presided over key programs of the National Natural Science Foundation of China and the Ministry of Education U40 Program.