北京
1
报告人：肖朦，浙江大学
时间：6月20日（周二）12:00
单位：江苏省物理学会
链接：
摘要：
对称性是粒子物理理论的关键，它将复杂的系统简化为简洁的形式。另外一方面，我们所处的宇宙又喜欢对称性破缺，希格斯粒子就是对称性破缺的产物。在我们生活的世界，只有物质没有反物质，这种不对称另人感到困惑，理论认为这是CP对称破缺的产物。然而我们现有的最成功的理论模型—标准模型并没有足够的CP对称破缺来解释正反物质不对称。所以它的来源是什么？2012年大型强子对撞机LHC发现了希格斯粒子，它会是产生这个不对称的来源吗？这个报告中我将介绍在LHC进行的希格斯粒子与基本粒子相互作用种CP破坏的寻找。
报告人简介：
肖朦目前任浙江大学百人计划研究员。2005-2009年，在南京大学完成本科学位和硕士阶段，2013年在法国原子能委员会获得博士学位，之后在美国约翰霍普金斯大学进行博士后研究，2019年加入浙江大学。她自2009年在大型强子对撞机LHC上从事研究，先后在ATLAS和CMS实验工作。她的研究领域包括希格斯粒子性质测量和QCD物理研究。2021年她因对希格斯粒子的CP和其他性质的测量获得CMS青年研究员奖。
2
报告人：张坤，东华大学
时间：6月21日 (周三) 9:30
单位：中科院物理所
地点：怀柔园区MA楼505会议室
腾讯会议ID: 669-131-505
会议密码：0621
摘要：
织物是人类不可或缺的一部分，将热电原理与纺织技术相结合，得到兼具柔软，三维共形，透气透湿，温度调节和能量收集的热电织物，在人体体表温度调控和热能收集方面具有重要的应用价值。课题组近年来致力于探索开发可穿着热电纤维及织物器件（Carbon 2019, 148, 290; Energy & Environmental Materials, 2020,3,67; Journal of Materials Chemistry A, 2020, 8, 2984; Energy & Environmental Science, 2022,15, 2374; Organic Electronics, 2022, 106, 106535; ACS Applied Materials & Interfaces, 2022,14, 44704）。本次报告将对课题组近年来在热电纤维与织物方面的研究成果进行系统汇报。
报告人简介：
张坤，东华大学纺织工程系，教授/博士生导师，主持国家自然科学基金、中科协青年人才托举工程等项目。主要从事柔性能量转换与存储材料、纤维及织物器件的基础与应用研究，在Energy & Environmental Science, Journal of Materials Chemistry A等期刊发表学术论文65篇。
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报告人：Dr. Ran Ni，School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore
时间：6月21日 (周三) 14:00
单位：中科院物理所
地点：物理所 M楼 253会议室
腾讯会议ID: 345-587-664
会议密码：0621
摘要：
In this talk, he will first introduce the new state of matter of non-equilibrium hyperuniform fluid that they found in systems of active colloids, and its hydrodynamic theory. Afterwards, he will talk about the generalized hyperuniform fluid of reactive particles and the related continuous and discontinuous absorbing phase transitions. They found that the discontinuous absorbing transition of hyperuniform fluid cannot occur through the kinetic pathway of nucleation and growth, and the phase transition rate decreases with increasing the system size. This implies that the metastable non-equilibrium hyperuniform fluid is ‘kinetically stable’ in the thermodynamic limit, which challenges the common understanding of metastability in discontinuous phase transitions. This ‘metastable yet kinetically stable’ hyperuniform fluid features a new hyperuniform scalingS(k→0)~？？1.2 .
报告人简介：
Dr. Ni is an associate professor in the School of Chemistry, Chemical Engineering and Biotechnology. He received his Ph.D of Physics in 2012 from Utrecht University (the Netherlands) working with Prof. Marjolein Dijkstra focusing on the computational study on the self-assembly of colloidal systems. From 2012 to 2014, he did his postdoc with Profs. Martien A. Cohen Stuart and Peter G. Bolhuis focusing on the self-assembly of fibril-forming polypeptides. In 2014, he was awarded the NWO VENI fellowship which is the most prestigious personal grant for young scientists in the Netherlands to start independent research lines. In 2016, he was awarded the Best Research Prize by the European Cooperation in Science and Technology (COST) Action – Flowing Matter [An annual prize for European Early Stage Researchers in soft matter within eight years after the date of PhD]. His research has been published in a number of top scientific journals, e.g. Nature, Nature Communications , Science Advances, PNAS, PRL, etc.
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报告人：徐晓军，澳门科技大学
时间：6月21日（周三）15:00
单位：北京大学空间物理与应用技术研究所
链接：
摘要：
太阳系内的金星火星等类地行星，与地球不同，缺少全球性内禀磁场。太阳风与它们的上层电离层相互作用，形成感应磁层结构。文献中，对于太阳风与金星火星相互作用的边界结构的定义和描述不尽相同，尽管已经有来自于金星和火星的大量就位观测数据，目前仍未建立一个统一的模型。我们发现，主导这一相互作用的质量装载（massloading）效应不仅受上游太阳风的控制，还受下游电离层条件的影响。根据massloading效应的强弱，我们提出对应的太阳风与无内禀磁场行星相互作用的边界层结构模型。此外，还将简单介绍一下我们在金星和火星空间环境的一些工作，包括火星空间环境中的磁场重联。
报告人简介：
徐晓军，现为澳门科技大学月球与行星科学国家重点实验室行星空间物理研究组组长，研究方向主要包括太阳风及其与月球、行星相互作用，以及行星空间环境。
5
报告人：Akira Dohi，日本理化学研究所
时间：6月21日 (周三) 15:30
单位：北京大学物理学院
Zoom Meeting ID: 839 0578 6750
Passcode: 784183
摘要：
Type-I X-ray bursts are rapidly brightening phenomena triggered by the nuclear burning of light elements near the surface of accreting neutron stars. So far, 115 X-ray bursters have been found by observations and show irregular behavior of light curves. However, some X-ray bursters are quite regular, i.e., constant recurrence time and constant shaper of light curves, and often called Clocked bursters, which are powerful sites to probe uncertainties of many model parameters such as accretion rate, the composition of accreted matter, reaction rates, neutron star structure, and temperature. In this study, we focus on the uncertainties of the equation of states, which determines the latter two properties. Based on our numerical models covering whole areas of neutron stars, we will present their impact on X-ray burst light curves. Furthermore, we will discuss the possibility of constraining equation of states from Clocked bursters such as GS 1826-24 and 1RXS J180408.9-342058.
报告人简介：
Special Postdoctoral Research (SPDR) Fellow, RIKEN ABBL (and iTHEMS), Japan (April 2023 - ) JSPS Research Fellowship (PD), Hiroshima Univ., Japan (October 2022 - March 2023) PhD, Kyushu University, JAPAN (September 2022)
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报告人：Yu Xudong，Institut d’Optique
时间：6月22日（周四）15:00
单位：青年科学半月谈
链接：
摘要：
The study of disordered systems with ultracold atoms has attracted much attention over the past decade, particularly to investigate the Anderson transition that occurs in three-dimensional systems between localized and diffusive states. However, significant discrepancies have been reported between experiments and numerics about the precise location of the mobility edge (energy of the transition), rendering new investigations desirable.
In this talk, I will show recent progress along that line, including the measurement of the spectral functions in laser speckle disordered potential, the configuration of double speckles, and the controlled spectroscopic transfer of atoms to create well-defined energy states. By scanning the energy across the mobility edge, this method enables precise measurement and direct observation of the 3D Anderson transition, which enhances our understanding of the critical regime. Recent results shows clear signature of the Anderson transition.
报告人简介：
Yu Xudong is a Ph.D. student in the group of Vincent Josse and Alain Aspect, in Institut d’Optique. He did his bachelor in Peking University and he finished the bachelor thesis in the group of Prof. Xuzong Chen. He received the Ph.D. grant of Ecole Doctoral Onde et Matière, université Paris-Saclay in 2020 to start the Ph.D. project. His main research interest is the experiment of quantum simulation of ultracold atoms. His Ph.D. work dedicate to the measurement of 3D Anderson transition in the speckle disorder with ultracold atoms.
7
报告人：汤迎，北京师范大学珠海校区复杂系统国际科学中心
时间：6月25日（周日）10:00
单位：中科院理论物理所
地点：南楼6620
摘要：
Machine learning and stochastic dynamics have deep connections and cross-feed each other. As an example of AI for science, machine learning provides a powerful tool to investigate the time evolution of stochastic dynamics. In this talk, I will report our recent progress in two specific questions: (1) tracking the time evolution of the probability distribution for stochastic reaction networks; (2) characterizing a type of dynamical phase transition in nonequilibrium statistical mechanics. The results demonstrate how machine learning can help understand nonequilibrium stochastic dynamics, and provide many opportunities for future developments.
报告人简介：
汤迎，北京师范大学珠海校区复杂系统国际科学中心的副研究员。上海交通大学物理系博士，加州大学洛杉矶分校定量和计算生物科学研究所博士后。研究领域为非平衡态系统的随机动力学、统计物理、机器学习。近期研究成果包括，提出了演化神经网络的方法追踪高维随机反应网络演化；发展了时间序列动力学互信息的计算框架；发现非平衡系统中一个新的自由能等式：磁场不做功却仍能增大自由能。
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报告人：王玲华，北京大学
时间：6月26日（下周一）20:00
单位：ISSIBJ国际空间科学研究所
链接：
摘要：
高能带电粒子在太阳系及宇宙空间中普遍存在，其起源和加速过程是空间物理学和物理学的基本问题之一。这些高能粒子对航天器安全和宇航员健康构成了严重威胁，是影响人类开展太空活动、探索浩瀚宇宙的关键制约因素之一。太阳为我们提供了一个巨大的天然科学实验室来研究空间中发生的粒子起源和加速过程。
在太阳爆发活动中，带电粒子可以被加速到接近光速。当这些高能粒子逃逸到行星际空间中，它们被称为“太阳高能粒子事件”。发生最频繁的一类太阳高能粒子事件是“富含电子和氦3离子”事件，其次是“富含质子”事件，这两类事件呈现出显著不同的特性。在行星际空间中，我们可以直接测量到这些高能粒子，遥测它们的太阳源区，以此研究这些粒子的起源和加速过程。
报告人简介：
北京大学地球与空间科学学院教授，主要致力于日球层高能粒子物理的研究和仪器研制工作。2009年获得美国加州大学伯克利分校物理系理学博士。2012年入选国家级人才计划，回到北京大学任教。曾获得中国青年女科学家奖、亚太等离子体物理杰出青年科学家奖，获得国家自然科学基金杰出青年项目资助，并承担国家重大科研仪器研制项目。现担任国际期刊JGR-space physics的副主编, 以及Solar Orbiter飞船上EPD仪器和BepiColombo MMO飞船上MPPE仪器的Co-Investigator。
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