5.7-5.11 学术活动预告
2018/5/4 15:55:27 中科院理论物理所
Title
From EFThedron to CFThedron
Speaker
Yu-tin Huang
Affiliation
NTU
Date
2018年5月7日13:00
Venue
Conference Room 322,
ITP main building
Abstract
In this talk, I will discuss the geometrization of unitarity constraints for physical observables such as four-point S-matrix for effective field theories (EFT) and correlation functions for CFT. There is a universality that emerges in the resulting geometry which is a reflection of the unification of unitarity, locality and symmetries. On the practical side it allows us to constrain the space of coupling constant for higher dimension operators of EFT, and dimensions as well as OPE coefficients in CFT.
Title
How are gluons condensed
Speaker
朱伟
Affiliation
华东师范大学
Date
2018年5月8日 14:00
Venue
Conference room 6420,
ITP New Building
Title
Controlling Human Microbiota
Speaker
Yang-Yu Liu (刘洋彧)
Affiliation
哈佛大学
Date
2018年5月8日 16:00
Venue
Conference room 6620,
ITP New Building
Abstract
We coexist with a vast number of microbes—our microbiota—that live in and on our bodies, and play an important role in human physiology and diseases. Many scientific advances have been made through the work of large-scale, consortium-driven metagenomic projects. Despite these advances, there are still many fundamental questions regarding the dynamics and control of microbiota to be addressed. Indeed, it is well established that human-associated microbes form a very complex and dynamic ecosystem, which can be altered by drastic diet change, medical interventions, and many other factors. The alterability of our microbiome offers opportunities for practical microbiome-based therapies, e.g., fecal microbiota transplantation and probiotic administration, to restore or maintain our healthy microbiota. Yet, the complex structure and dynamics of the underlying ecosystem render the quantitative study of microbiome-based therapies extremely difficult. In this talk, I will discuss our recent theoretical progress on controlling human microbiota from dynamical systems and control theory perspectives.
Title
宇宙的黎明
Speaker
陈学雷
Affiliation
国家天文台
Date
2018年5月9日10:00
Venue
Conference Room 6620,
ITP new building
Abstract
宇宙大爆炸结束后进入黑暗时代，在万有引力作用下原初扰动逐渐增长形成第一代恒星和星系，宇宙进入黎明时期。我将介绍这一演化的物理图像，以及对之进行研究的观测手段。特别是，宇宙黎明时期可能存在21cm吸收谱信号，不久前EDGES实验宣称探测到了这一信号，且强度高于理论模型的预期，我也将对此进行介绍和讨论。最后，我将介绍我们刚刚启动的超长波天文阵列研究计划，通过发射环绕月球编队飞行的卫星，实现高精度的全天平均谱测量，
探索宇宙黑暗时代和黎明。
Title
Recent studies within the covariant density functional theory
Speaker
Professor Anatoli Afanasjev
Affiliation
Mississippi State University, USA
Date
2018年 5月10日 16:00,
Venue
Conference Room 322,
ITP main building
Abstract
The covariant density functional theory is mature microscopic theory for studies in low-energy nuclear physics. In my presentation, I will consider recent results obtained within its framework. I will start with the discussion of basic principles of this theory. Then I will focus on the clusterization in light nuclei at zero and high spins and on microscopic origin of this phenomenon. This will be followed by the analysis of superheavy Z = 100-126 and hyperheavy Z > 126 nuclei and related physics issues. The role of octupole deformation, fission, exotic shapes in hyperheavy nuclei and other issues will be discussed. Finally, I will consider the role of different reactions in the crust of neutron stars and how they affect the modification of the composition of the crust with depth.
Title
Deformations of the circular Wilson loop, defect-CFT data and spectral independence
Speaker
Prof. Nadav Drukker
Affiliation
King’s College London
Date
2018年5月11日 10:30
Venue
Conference Room 6620,
ITP new building
Abstract
Deformations of the circular Wilson loop in N=4 SYM can be viewed as operators of a defect CFT. I will review that and discuss some new results for the expectation value of the deformed circle at weak and strong coupling. I will also present some computations of anomalous dimensions and structure constants.
http://weixin.100md.com
返回 中科院理论物理所 返回首页 返回百拇医药