学术报告-兰州理论物理中心

学术报告

学术会议

专题讲座

2024/12/06 周五 10:50

Quantum Corrected AdS/CFT Correspondence at Low Temperatures and Its Applications

A large class of black holes have near-horizon AdS_2 throat regions. Using the recent progress on the nearly AdS_2 Jackiw-Teitelboim gravity theory, we can study the quantum gravity effects of the near-horizon AdS_2 region and then lift them to higher-dimensional black holes. It turns out these apparently trivial effects of quantum gravity can play crucial roles in the near-extremal AdS/CFT correspondence. In this talk, we will discuss the mechanism of AdS_2 quantum effects embedded in higher-dimensional AdS spaces and the quantum-corrected AdS/CFT correspondence at low temperatures. As applications, we discuss how this new approach resolves various problems, including quantum-corrected holographic strange metal and quantum-corrected fluid/gravity correspondence. Most importantly, quantum gravity effects provide new insights into the formidable long-standing Yang-Mills confinement problem. This talk is based on my recent and upcoming papers with collaborators.

年骏助理教授中国科学院大学理工楼1226

2024/12/06 周五 09:40

Shadows related physics of hairy black holes

Theimage of black hole consists of the black hole shadow and accretion construction, of which the shape and size reflect the properties of the central black hole. In this talk, I will present the constraints on the hairy black holeswiththeuse of Event Horizon Telescope observations for supermassive M87* and Sgr A* black holes. Then I will showphotonrings, shadow and lensing effectof hairy black holes illuminated by thin accretions, which exhibit succulent features, differentiating those of the Schwarzschild black hole in general relativity.

况小梅教授扬州大学理工楼1226

2024/12/06 周五 08:30

New Perspectives on the Unruh Effect

The Unruh effect, a celebrated phenomenon in quantum field theory in curved spacetime, is often regarded as a counterpart to Hawking radiation from black holes. It carries profound theoretical significance due to its deep connections with the yet-to-be-established quantum theory of gravity. However, experimental verification has remained elusive, primarily due to the widely held belief that extremely large accelerations are required for its observation.In this talk, we review our recent work, providing new perspectives on the Unruh effect for circularly accelerated detectors. Our findings challenge the conventional notion that a significant Unruh effect necessitates large acceleration, demonstrating that the effect can be pronounced even at small accelerations.

余洪伟教授湖南师范大学理工楼1226

2024/12/06 周五 10:00

基于脑结构的大尺度脑网络动力学建模研究

当前脑结构与脑功能的实验研究取得大量数据，且在各个层次构建脑模型也成为了计算神经科学研究的主流方向之一。而核磁共振扫描作为非侵入式的研究手段，是当前研究人脑结构与功能的重要方式，而基于该数据构建正确表征人脑状态的全脑唯象动力学模型是建立脑结构、功能与脑疾病之间联系是核磁共振影像应用于临床的迫切需求。

蒋俊杰研究员（西安交通大学）理工楼1201

2024/12/06 周五 08:30

【会议通知】2024引力研究中心小型报告会(第四期)

会议时间：2024年12月6日（周五）上午08:30 会议地点：理工楼1226 报告人：余洪伟教授、况小梅教授、年骏助理教授

余洪伟、况小梅、年骏理工楼1226

2024/11/22 周五 14:30

【会议通知】2024引力研究中心小型报告会(第三期)

引力研究中心小型报告会(第三期)于2024年11月22日周五下午14:30在兰州大学理工楼1226举行，欢迎大家参加！

Robert B. Mann 教授、侯绍齐副研究员、杨佳悦理工楼1226

2024/11/08 周五 08:30

【会议通知】2024引力研究中心小型报告会(第二期)

2024引力研究中心小型报告会（第二期）于11月8日在兰州大学本部校区理工楼1226举行，欢迎各位老师同学参加！

庞毅教授、吴健聘教授、李伟佳副教授理工楼1226

2024/11/01 周五 09:00

【会议通知】理论物理前沿问题小型研讨会

理论物理前沿问题小型研讨会在兰州大学理工楼1226举办

匡乐满教授等理工楼1226

2024/10/14 周一 15:00

非线性动力学中的重正化群方法及时间不可逆

第一讲区间映射：二次方映射的符号动力学，倍周期分支的重正化群方法（10月14日下午15：00）第二讲圆映射的符号动力学，标准映射的重正化群方法（10月15日上午10：00）第三讲 Henon 映射的符号动力学（10月16日下午15：00）第四讲 Arnold 猫映射与时间不可逆（10月17日上午10：00）

郑伟谋研究员（中科院理论物理所）理工楼1201

2024/08/08 周一 14:30

Introductory course on Nonlinear Dynamics, Chaos Theory and Complex Systems——Jesús M. Seoane

本讲座的非线性动力学与混沌是基础课程，面向科学与工程专业一年级的本科生以及开始从事该领域研究工作的研究生。主要内容是广泛使用计算工具，互联网和实验室实验。尽管他们以前在物理和数学背景可能是有限的，我们的经验表明，与使用的一些概念上的介绍性的想法和多媒体技术的内容适当的选择是引入非线性动力学与混沌本科生和研究生一个很好的方式。

Jesús M. Seoane 教授（西班牙胡安卡洛斯国王大学）（腾讯会议）474-9444-7759

2024/04/13 周六 17:00

An introduction to mathematical logic focused on analysis

This course is designed to introduce the fundamental principles of mathematical logic with a focus on analysis. It aims to equip students with the conceptual tools and logical frameworks necessary for rigorous mathematical reasoning, particularly within the realms of real analysis. The curriculum will cover key topics, including propositional logic, first-order logic, proof strategies, and the theory of quantifiers. Additionally, the course will address the application of logical principles in analysis, exploring continuity, differentiation, and integration from a logical perspective. Through lectures, problem-solving sessions, and assignments, students will develop the ability to construct and critique mathematical arguments, thereby enhancing their analytical skills.

Pau Amaro Seoane (Valencia University, Spain) 线上

2023/12/01 周五 9:30

【专题系列讲座】物理学中的微分几何基础

主要内容是讲微分流形；微分流形上的几种主要结构及运算；黎曼流形及引力理论基础；经典力学的几何描述—辛几何，几何量子化简介。

杨孔庆教授（兰州大学）理工楼1201

【新闻】物理学院吴威教授与安钧鸿教授团队在量子热力学领域取得重要进展