报告人：李泓，中科院物理研究所
时间：11月1日（周三）15:30
单位：清华大学物理系
地点：理科楼C302报告厅
先进电池是支撑能源革命的关键技术，电池中的储能机理与电子和离子同时注入到材料中有关。从固体物理的视角看，电极材料中的离子电子混合输运涉及到电子、离子、晶格的相互作用；离子和电子的大量存储显著改变了材料的晶体结构及物理化学性质。本报告将探讨电池充放电过程中电极材料的物理和化学性质的改变，小结电池中的物理问题，介绍电子离子混合存储相关的固态离子器件。
2Machine Learning Application in Supersymmetry
报告人：杨金民，ITP
时间：10月31日（周二）12:00
单位：中科院理论物理研究所
地点：322报告厅
Will talk about a Machine Learning approach for a fast and reliable exploration of high dimensional parameter space by using machine learning models to evaluate the quality of random parameter sets. As a proof-of-concept, this approach is applied to several benchmark models including a supersymmetry scenario. The finding is that such an approach can significantly reduce the computational cost and ensure the discovery of all survived regions.
报告人：Jean Zinn-Justin
时间：10月31日—11月8日，每个工作日上课，14:00—16:00
单位：中科院理论物理研究所
地点：理论所新楼6620
普适性和连续极限，相变和标度理论，重整化群：一般理论，重整化群：具体应用。
4Catalytic conversion of CO2 to fuel
报告人：杨艳辉，南京工业大学
时间：10月31日（周二）15:30
单位：中科院理化技术研究所
地点：1号楼403房间
5Phase diagrams and quantum criticality in iron-based superconductors
报告人：Takasada Shibauchi，University of Tokyo
时间：11月1日（周三）10:00
单位：中科院物理研究所
地点：M楼236
The most important aspect of the iron-based superconductors may be that they open a new landscape in which to study mechanisms of unconventional pairing that lead to high-Tc superconductivity. The high transition temperatures in both cuprates and iron pnictides cannot be explained theoretically by the conventional electron-phonon pairing mechanism, and thus there is almost complete consensus that the superconductivity of both systems has an unconventional origin. Here I will discuss the relationship with competing orders in the phase diagrams of iron-based superconductors. In BaFe2As2-based superconductors, we find several pieces of evidence for the presence of the quantum critical point (QCP) of the antiferromagnetically ordered phase, where several anomalous properties have been observed. However, the ordered phase also involves electronic nematicity, whose impact on the superconductivity is hard to be distinguished from that of magnetism. In contrast, one can tune nonmagnetic nematic QCP in FeSe-based superconductors. The comparisons between phase diagrams of these two systems, the relationship between QCPs and superconductivity will be discussed.
6Intrinsic Time Quantum Gravity and the emergence of Einstein's General Relativity
报告人：Hoi-Lai Yu，台湾中央研究院物理研究所
时间：11月1日（周三）10:00
单位：北京师范大学物理系
地点：物理楼105
The Hamiltonian of Intrinsic Time Gravity is elucidated. The theory describes Schrodinger evolution of our universe respect to the logarithmic change of its total spatial volume.Heat kernel regularization is employed to demonstrate the remarkable emergence of Einstein's theory from its simple positive (semi)definite self-adjoint Hamiltonian.If time allows, the determination of the unique initial state of the Universe will also be discussed.
7Quartified Leptonic Color, Bound States, and Future Electron–Positron Colliders
报告人：Mohammadreza Zakeri，University of California
时间：11月1日（周三）15:00
单位：中科院理论物理研究所
地点：Room 6420, ITP New Building
The [SU(3)]^4 quartification model of Babu, Ma, and Willenbrock (BMW), proposed in 2003, predicts a confining leptonic color SU(2) gauge symmetry, which becomes strong at the keV scale. It also predicts the existence of three families of half-charged leptons (hemions) below the TeV scale. These hemions are confined to form bound states which are not so easy to discover at the Large Hadron Collider (LHC). However, just as J/ψ and ϒ appeared as sharp resonances in e−e+ colliders of the 20th century, the corresponding "hemionium" states are expected at a future e−e+ collider of the 21st century.
8The most powerful jets and winds in microquasars
报告人：Roberto Soria，NAOC
时间：11月2日（周四）14:00
单位：清华大学物理系
地点：蒙民伟科技南楼 S727
At the highest accretion rates (above the classical Eddington limit), theoretical models and numerical simulations predict that stellar-mass black holes and neutron stars release a significant fraction of accretion power via jets and winds. Identifying examples of such powerful outflows, and measuring their kinetic power, is not as simple as identifying the most luminous X-ray sources in a survey. I will illustrate examples of ultraminous X-ray sources where the presence of thick winds is revealed from downscattering, lines and edges imprinted on the observed X-ray spectrum. I will then show examples of huge shock-ionized nebulae (size > 100 pc) around some sources: we measure the expansion velocity of the bubble and the emission from diagnostic lines to estimate the power injected by the accreting compact object. In some cases, such bubbles are also associated with radio synchrotron bubbles. Finally, I will discuss whether the jet and wind power may provide a clue to distinguish between neutron star and black hole accretors.
报告人：黄梅，中科院高能所研究员
时间：11月2日（周四）16:00
单位：清华大学物理系
地点：郑裕彤讲堂
量子色动力学（QCD） 在强耦合区域的非微扰性质如色禁闭及手征对称性的自发破缺等一直是粒子物理和核物理中的难点问题，高温高密及其它极端条件下的手征相变和退禁闭相变以及QCD相结构是相对论重离子碰撞实验的核心课题。引力/规范对偶或AdS/CFT对偶方法为理解强耦合规范理论问题提供了一种全新的方法，基于引力/规范对偶发展起来的五维全息QCD方法体现了重整化群的思想，在研究强耦合QCD问题上具有一定的优势。报告将介绍用五维动力学全息QCD模型研究强耦合夸克物质的系列结果：包括手征相变、退禁闭相变、热力学性质、输运性质以及QCD临界点。
