报告题目：Mean-field calculations with regularized 2- and 3-body pseudopotentials
报告人：Karim Bennaceur 教授
报告人单位：法国里昂一大
主持人：黄坤 教授
报告时间：2026年6月9日（周二）下午14:00-15:00
报告地点：闵行校区光学大楼A508会议室
报告摘要：
Over the past decades, the Energy Density Functional (EDF) method has proven to be a toolof choice for the study of the entire chart of nuclei except the lightest ones. With the use of aneffective interaction, a relatively simple ansatz for the wave function and the application of avariational principle, this method allows to account for a large set of properties of atomic nucleisuch as their binding energies and shapes in their ground states, the energy levels of theirrotational bands or their possible fission barriers.I will present a brief history of different flavours of effective interaction commonly usedin nuclear structure calculations and explain why, despite unquestionable successes when used at themean-field level, they lead to formal and technical problems for calculations beyond the mean-fieldapproximation.In order to have an interaction usable at the mean-field level and beyond, without facing theaforementioned difficulties, we developed a new type of effective interactions called "regularizedfinite-range pseudopotentials".Recently, such a regularized interaction was adjusted and tested with mean-field calculations forinfinite nuclear matter and spherical nuclei. The results are very promising a represent a proof ofconcept that this approach is valid and may be used in beyond-mean-field calculations.
报告人简介：
K. Bennaceur completed his university studies at the University of Burgundy (Dijon) and the University Louis Pasteur (now the University of Strasbourg), before pursuing his PhD at GANIL (Grand Accélérateur National d’ions Lourds, Caen) under the supervision of Prof. M. Płoszajczak and Prof. J. Dudek in the field of theoretical nuclear structure. His doctoral dissertation, entitled “Microscopic Theory of Exotic Light Nuclei – Shell Model Embedded in the Continuum”, was defended in December 1999. Following his PhD, he held postdoctoral positions at CEA Bruyères-le-Châtel (France) and Oak Ridge National Laboratory (Tennessee, USA) before obtaining a permanent position at the University Claude Bernard Lyon 1 in 2001. Since then, his research has focused on theoretical nuclear structure, particularly on the development of effective interactions for mean-field and beyond-mean-field calculations. He also spent two research leaves at leading institutions in the field: IRFU (CEA Saclay, France) from 2005 to 2007 and the University of Jyväskylä (Finland) from 2013 to 2017. In addition to his research and teaching activities, he has been actively engaged in international academic cooperation. From 2018 to 2024, he coordinated a dual bachelor’s degree program with Wuhan University (China), and he currently serves as the coordinator of international student exchanges for the Physics Department at the University Claude Bernard Lyon 1.
