学术活动
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2023-1222
Title: The photon content of the nucleonSpeaker: Keping Xie 谢可平 (Michigan State University) Time: 1:30 pm, Dec 25 (Monday) 2023Location: 理科楼C109Abstract: Building upon the most recent CT18 global fit, we present a new calculation of the photon content of the nucleon, including both proton and neutron, based the LUXqed methodology. We explore two principal variations of the LUX ansatz. In ...
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2023-1220
Title: Firewalls from wormholesSpeaker: Zhenbin Yang 杨镇斌 (Tsinghua University)Time: 2:00 pm, Dec 21 (Thursday) 2023Location: 理科楼C302Abstract: Spacetime wormholes can lead to surprises in black hole physics. We show that a very old black hole can tunnel to a white hole/firewall by emitting a large baby universe. We study the process for a perturbed thermofield double black hole in Jackiw-T...
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2023-1218
报告题目:物理系colloquium: 原子钟的发展报告人:高克林中国科学院精密测量科学与技术研究院报告时间:2023-12-21 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系简介:现代科学技术的发展建立在精密实验测量基础之上。迄今为止，时间频率作为目前人们所涉及的物理量及物理常数中最精密和最准确的计量单位，决定着其它许多物理量及基本物理常数的定义及精度。原子频标研究对精密和准确的不断追求，是推动物理科学发展的动力。精...
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2023-1211
报告题目：Probing and tuning quantum transport in topological phases of matter报告人：刘金雨，Department of Physics and Astronomy, University of California, Irvine时间：2023年12月15日(周五）10：00 地点：物理系B315Abstract: The exploration of novel quantum materials advances our fundamental understanding of matter and unlocks the potential for technological breakthroughs, from energy harvesting ...
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2023-1211
报告题目：一个知识分享者的生涯报 告 人: 陈曦 教授，清华大学物理系报告时间：12月14日（周四） 14：30-15：30报告地点：理科楼郑裕彤讲堂摘要：普通物理为学习者提供思考的素材和领悟物理学家看待世界的方式的机会。但如何使这门课程对于物理基础好的学生具有挑战性是一个富于挑战性的问题并有着广阔的发挥空间。基于建构主义和认知负荷理论，我在过去十五年中推进了对这个问题的探索。期间遵守的三个基本原则是：以知识为中...
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2023-1211
Title: Optimized quantum measurement: from cooling to shapingSpeaker: Jun Jing (景俊), School of Physics, Zhejiang UniversityDate and Time: 2023年12月14日 2:00pmLocation: 培黎职业学院综合楼2层Abstract：A quantum resonator in a thermal-equilibrium state with a high temperature has a large average population and is featured with a significant occupation over Fock states with a high excitation num...
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2023-1208
报告题目:物理系colloquium: Discovery of high-Tc superconductivity in a nickelate under pressure 报告人:王猛中山大学物理学院教授报告时间:2023-12-14 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系 简介:High-transition-temperature (high-Tc) superconductivity in cuprates has been discovered for more than three decades, but the underlying mechanism remains a mystery. Cuprates are the only unconven...
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2023-1204
Title: Patchy dark screeningSpeaker: Junwu Huang 黄俊午 (Perimeter Institute)Time: 2:00 pm, Dec 7 (Thursday) 2023Location: 理科楼C302Abstract: I will discuss anisotropic (patchy) screening induced by the resonant conversion of cosmic microwave background (CMB) photons into light bosons in the dark sector as they cross non-linear large scale structure (LSS). Using kinetically mixed dark photon a...
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2023-1201
报告题目：关联电子体系对称性的人工操控报 告 人： 张金星 教授，北京师范大学报告时间：2023年12月06日16:00报告地点：理科楼C302报告摘要：实现物质对称性的调控是研究凝聚态物理和创造新奇现象的重要基础。半个世纪以前，物理学家安德森就提到凝聚态物质的研究即是对称性的研究，朗道的唯象理论也特别指出物质相变的发生必然伴随着对称性的破缺。近年来的理论和实验研究发现，在关联电子材料中打破空间或时间反演对称性将有...
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2023-1128
Title: Complexity and order in approximate quantum error-correcting codes报告人: 刘子文（丘成桐数学科学中心）时间地点：11月28日（周二）下午 2:00pm，静斋105Abstract: Quantum codes achieving approximate quantum error correction (AQEC) are useful, often fundamentally important, from both practical and physical perspectives but lack a systematic understanding. In this work, we establish rigorous co...
