题目:Covariant Density Functional Theory in Nuclei
报告人:Peter Ring教授
时间:11月21日15:30
地点:3-323
报告人简介:1965年毕业于慕尼黑大学物理系,1969年获慕尼黑技术大学博士学位。1969-1973年任慕尼黑技术大学助理研究员。1973-1975年在美国Berkeley国家实验室从事博士后研究。1975年任慕尼黑技术大学理论物理讲师,1980晋升为教授。曾经担任PHYSICAL REVIEW LETTERS 等刊物编委,1992年获得西班牙—德国科技合作Humboldt–Mutis奖,2005年为核物理海伦协会名誉会员。研究领域包括量子多体理论,原子核的转动和振动激发,奇特原子核,超重原子核以及协变密度泛函理论等,是原子核多体系统的相对论平均场理论的创始人。先后在PHYSICS REPORTS、PHYSICAL REVIEW LETTERS等学术期刊发表SCI论文近三百篇,SCI引用累计近万次,H因子为51。其专著《The Nuclear Many-Body Problem》自1980年出版以来多次重印,成为核物理学界最受欢迎的经典著作之一。
报告内容简介:
Since the early work of Kohn and Sham Density Functional Theory (DFT) in Coulombic systems
has been developed as a very powerful, in principle exact, tool for the description of quantum
mechanical many-body systems. In nuclear physics Density Dependent Hartree-Fock (DDHF) theory
introduced in the seventies by Vautherin and Brink have turned out to provide an extremely
successful non-relativistic description of nuclear ground states and excited states all over
the periodic table. They are considered as density functional theories for strongly interacting
nuclear systems. Since spin degrees of freedom play an extremely important role in nuclear
physics a spin-orbit termhas to be included in these theories which depends on additional
phenomenological parameters. Covariant Density Functional Theory (CDFT) in nuclei is
based on the Walecka model. An effective density dependence is introducedthrough non-linear
meson couplings. Modern versions are point coupling models with density dependent vertices.
These functionals take fully into account Lorentz invariance, one of the underlying symmetries
of QCD. It not only allows to describe the spin-orbit coupling in a consistent way, but it also
puts stringent restrictions on the number of parameters in the corresponding functionals without
reducing the quality of the agreement with experimental data. In this talk we compare modern
relativistic and non-relativistic functionals, in particular their limits and their successes
for the description of static and dynamic properties of nuclei.
中国·浙江 必威体育app下载市二环东路759号(313000) 浙ICP备10025412号 浙公网安备 33050202000195号 版权所有:党委宣传部