超重核、新型密度泛函、弦理论和场论、轴子宇宙学、QCD | 本周物理讲座

1

报告人：王宁，广西师范大学

时间：12月30日（周二）10:00

单位：中国科学院理论物理研究所

地点：南楼6520

摘要:

本报告围绕超重核在预形成与自发裂变过程中的结构效应展开，系统探讨了超重元素合成的意义、路径及其关键科学问题。针对熔合蒸发途径，报告深入探讨TDHF、ImQMD等模型对俘获过程的动力学模拟，以及通用Wong公式、EBD2公式等俘获截面的计算方法。研究指出，原子核基态形变、反应Q值、壳效应、正Q值中子转移等因素均对垒下俘获截面具有重要影响，而深度非弹性散射在合成119号及以上超重核时的影响亦不可忽视。报告进一步讨论了原子核自发裂变过程中的有效隧穿垒（ETB），比较了不同模型对自发裂变半衰期的预测能力，并指出壳能隙以及衰变能对丰质子超重核自发裂变的关键作用。

报告人简介:

王宁，广西师范大学教授、广西核物理与核技术重点实验室主任、国家自然科学基金优秀青年基金获得者。主要从事重离子熔合反应、原子核质量等研究。提出了一个高精度的核质量模型，得到了同行的广泛关注与好评；还提出了重离子熔合反应截面的通用Wong公式以及改进的量子分子动力学模型，为实验合成新核素以及探索熔合机制提供了重要的理论支撑。

2

报告人：王志伟，University of York

时间：12月30日（周二）14:00

单位：中国科学院理论物理研究所

地点：Lecture Hall 6620, South Building

Zoom Meeting ID: 844 0034 0762

Passcode: 727537

摘要:

In the framework of General Relativity, the definition and interpretation of energy (mass) remains one of its most profound and enduring challenges. Two of the most widely recognized definitions are the ADM mass and the Komar mass: the ADM mass is defined based on the Hamiltonian principle, while the Komar mass is constructed via Noether's principle. Although their definitional phylosophy are distinct, they have been proven to be completely equivalent in stationary,asymptotically flat spacetimes. However, their specific relationship in dynamic spacetimes has remained unclear for fifty years. Our research focuses on the correlation between ADM energy and generalized Komar mass within asymptotically flat dynamic spacetimes. We demonstrate that a generalized Komar energy, constructed using an appropriately chosen asymptotic timelike vector field, is exactly equivalent to the ADM energy. This result extends the equivalence of ADM and Komar energy to more general dynamic scenarios, providing a powerful analytical tool for addressing energy problems in dynamic spacetimes involving compact objects (such as black holes).

报告人简介:

Zhiwei Wang is a Postdoctoral Researcher at the University of York, UK. He received his PhD from the University of York in August 2020. Subsequently, he conducted postdoctoral research at the University of Lethbridge (Canada), the University of Warwick (UK), and the University of York (UK). His research primarily focuses on theoretical work regarding black hole thermodynamics, dynamic spacetimes, and quantum gravity phenomena. His relevant research results have been published as the first author in journals such as Nature Astronomy, Nature Communications, and Physical Review D.

3

报告人：肖煌煜，波士顿大学&哈佛大学

时间：12月30日（周二）15:00

单位：中国科学院理论物理研究所

地点：南楼6420

摘要:

I will discuss cosmological aspects of the QCD axion and more general axion-like particles. I will then show how axions can play a key role in well-motivated baryogenesis frameworks, strengthening their motivation beyond the strong CP problem. Next, I will introduce a simple axion–monopole model in which the axion dynamics induces an effective interaction between dark matter and dark energy. I will close with recent developments in cosmological signals of axion dark matter and prospects for future detection.

报告人简介:

Huangyu Xiao obtained his PhD from the University of Washington in 2022. Then he moved to Fermilab and U chicago for his first postdoc, and recently joined Boston University and Harvard University in 2025 for his second postdoc. His recent research interests include cosmological probes of axions and particle physics model building to explain the origin of baryon asymmetry.

4

报告人：张玉波，闽江学院

时间：12月31日（周三）10:00

单位：中国科学院物理研究所

地点: M830

摘要:

过渡金属化合物因其d电子的关联特性，常展现出奇异物理性质，这对广泛应用的Kohn-Sham密度泛函理论构成了挑战。传统LDA/GGA泛函在预测此类材料性质时存在较大偏差，导致学界对DFT方法的可靠性存在广泛质疑。近年来，SCAN meta-GGA泛函及其改进版本r2SCAN取得重要突破，对过渡金属化合物的物性预测有了显著进步，促使人们重新审视DFT在过渡金属化合物中的适用性。本报告将介绍SCAN/r2SCAN泛函的基本原理，重点阐述它们在若干过渡金属化合物研究中的进展及性能提升机制，并探讨当前依然存在的挑战。

报告人简介:

张玉波博士，2006年本科毕业于山东大学，2012年获得哈尔滨工业大学物理学博士学位。张博士先后在中国科学院上海硅酸盐研究所、美国杜兰大学孙建威/John Perdew教授团队从事博士后研究工作。2018年回国加入南方科技大学张文清教授团队，担任研究副教授。2022年入职闽江学院开展独立研究。张博士致力于复杂磁性材料的密度泛函理论研究。已发表论文69篇，H指数31，被引6000余次。

5

报告人：陈璟怡，南京信息工程大学

时间：12月31日（周三）10:00

单位：北京大学物理学院

地点：物理大楼北547教室

腾讯会议：385-355-782

6

报告人：张东良，马克斯-普朗克复杂系统物理研究所

时间：12月31日（周三）10:30

单位：中国科学院理论物理研究所

地点：南楼6620

7

报告人：Bartosz Pyszkowski，YITP, Kyoto University

时间：1月5日（周一）10:00

单位：中国科学院理论物理研究所

Zoom Meeting Meeting ID: 893 1198 4573

Passcode: 008904

摘要:

Following Polchinski and Strassler arXiv:hep-th/0109174 and our recent work arXiv:hep-th/2412.17784, I will discuss our ongoing study of high-energy pion scattering in a holographic hard-wall model of QCD. I will begin with a brief overview of the Polchinski--Strassler proposal before applying it to the holographic hard-wall model. The main focus is on comparing our predictions for the angular dependence of $\pi^{+} \pi^{-} \to \pi^{+} \pi^{-}$ scattering with experimental data. Having previously shown that our approach reproduces the constituent counting rule in QCD, we now find qualitative agreement with data in the high-energy fixed-angle regime. Time permitting, I will also comment on possible extensions to other processes and models, and attempts to ``prove'' the Polchinski--Strassler proposal.

报告人简介:

Bartosz Pyszkowski is currently a Ph.D student of YITP at Kyoto University since 2022,before that,he obtained his master degree from Durham University in 2021 after he graduated from Warwick University in 2020. His research focuses mainly on holographic QCD and related aspects of holography.

封面图片来源：https://www.ccnta.cn/show-112-5183-1.html

更多报告信息：

《物理》50年精选文章