本学期学术活动
-
2023-1110
报告题目:物理系colloquium: HIGHLIGHTS OF CMS 报告人:Claudia-Elisabeth WulzInstitute of High Energy Physics of the Austrian Academy of Sciences报告时间:2023-11-16 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系 简介:CMS, the Compact Muon Solenoid experiment, operates at the Large Hadron Collider of CERN. It has been designed to answer important questions about our Universe. With its huge detec...
-
2023-1108
Title: Compact Scalars at the Cosmological ColliderSpeaker: John Stout (Harvard University)Time: 10:00 am, Nov 9 (Thursday) 2023Location: 腾讯会议：319-394-973 https://meeting.tencent.com/dm/4H1c2V8pkc8c Abstract: We study the dynamics of scalar fields with compact field spaces, or axions, in de Sitter space. We argue that the field space topology can qualitatively affect the physics of these f...
-
2023-1106
报告题目：Ultrafast Microscopy of Structured Light-Matter Waves - a Gateway to Axion Physics?报告人：Hrvoje Petek （Department of Physics and Astronomy，University of Pittsburgh）报告时间：2023年11月09日10:00报告地点：理科楼C302报告摘要：Light travels at 300 nanometers (10-9 m) per femtosecond (10-15 s), and nothing is faster than that. Its focusing is limited by diffraction to ~0.5λ, where λ...
-
2023-1106
报告题目:物理系colloquium: 单原子灵敏检测用于探索古老的冰与水 报告人:卢征天中国科学技术大学，合肥国家实验室报告时间:2023-11-09 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系 简介:惰性气体氪-81 （81Kr）的核不稳定，半衰期为23万年，是测量年龄在十万到百万年范围的地下水和冰样的理想示踪同位素。该年代范围是碳-14所不能覆盖的。从上世纪中叶以来，许多物理实验为探测81Kr做出了各种努力，但是都没有成功。我...
-
2023-1106
报告题目：原子尺度上解密非常规高温超导电性报 告 人: 宋灿立 副教授，清华大学物理系报告时间：11月9日（周四） 14：30-15：30报告地点：理科楼郑裕彤讲堂摘要：高温超导体因其丰富的物理性质和潜在的应用价值是凝聚态物理领域备受关注的前沿方向之一。本报告我将介绍基于外延薄膜高温超导电性的原子尺度研究，着重阐述近年来我们利用分子束外延技术在非常规高温超导薄膜制备和量子调控方面取得的研究进展；而在高温超导电性...
-
2023-1106
报告题目:理学院科学之美讲坛: The XENON project: at the forefront of Dark Matter Direct Detection 报告人:Elena AprileColumbia University报告时间:2023-11-07 16:00报告地点:理科楼A112主办单位:理学院（主办），物理系（承办） 简介:What is the Dark Matter, which makes 85% of the matter in the Universe? We have been asking this question for many decades and used a variety of experimental approaches ...
-
2023-1030
Title: Quantum metrology with spatially distributed atomic ensemblesSpeaker: MATTEO FADEL ETH ZurichTime: 10:00 am, 2023-10-31 TuesdayLocation: Room C302, Science Building, Tsinghua UniversityAbstract: Quantum correlations, and in particular entanglement, are known to be a resource for quantum-enhanced parameter estimation. However, there are correlations stronger than entanglement, which revea...
-
2023-1030
题目: 核子基本性质的未解之“谜”报告人: 彭潮（美国阿贡国家实验室）时间: 2023年10月30日 (周一) 15:00地点: 理科楼 B315摘要： 核子（质子、中子）是构筑我们可观测宇宙的基石。现代研究中，核子常被视为由夸克和胶子组成的动态复杂系统。量子色动力学(QCD) 所描述的强相互作用力主导了该系统中基本自由度之间的相互作用。核子研究的终极目标之一是描述核子如何从最基本的自由度——夸克胶子间的相互作用中“涌现”。这...
-
2023-1027
报告题目:物理系colloquium: 自旋轨道相互作用与重离子碰撞过程整体极化效应 报告人:梁作堂山东大学报告时间:2023-11-02 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系 简介:自旋轨道耦合是相对论运动的系统中相互作用的基本属性， 强相互作用中的自旋轨道耦合使得夸克轨道角动量在高能自旋物理中起到了极其重要的作用。 本报告将简单叙述质子内夸克轨道角动量存在的必然性以及它在解释高能反应一系列意外自旋效应中的特...
-
2023-1027
Title: Higher-point AdS amplitudes from flat space and factorization Speaker: Xinan Zhou 周稀楠 (University of Chinese Academy of Sciences)Time: 2:00 pm, Nov 2 (Thursday) 2023Location: 理科楼C302Abstract: Much of the modern developments of holographic correlators is based on bootstrap methods. These methods rely heavily on the use of superconformal symmetry and become increasingly cumbersome wh...
