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Schedule of ITP's Seminar/Colloquim
Location: Physics Building South 408
Time: Thursday 3:00PM
(except indicated otherwise)
Sept. 24, 2008, Wed., 3PM
Title:
Why we get more interested in Quantum Chromodynamics after 35 years?
Speaker: Prof. Jianwei Qiu
(Iowa State University)
Abstract:
PDF file of the talk!
Lecture (1) at IHEP
Lecture (2) at IHEP
Lecture (3) at IHEP
Lecture (4) at IHEP
Lecture (5) at IHEP
Lecture (6) at IHEP
Contact person: Prof. KT Chao.
Sept. 13, 2008, Saturday, 4PM
Title:
(1) New results from BLAST on nucleon electromagnetic form factors;
(2) Compton Scattering and Neutron spin polarizabilities
Speaker: Prof. Haiyan Gao
(Duke University)
Abstract:
Contact person: Prof. BQ Ma.
July 28, 2008, Monday, 3PM
Title:
Partially strong weak gauge boson scattering
Speaker: Prof. Cheng-Wei Chiang
(Taiwan Central University)
Abstract: We study the scenario that only a light Higgs boson is discovered at the
CERN LHC.
To find out whether it is a standard model Higgs boson, we suggest to
study the scattering of longitudinal weak gauge bosons at high energies.
We show that in some cases, the presence of a light Higgs boson does not
guarantee the complete unitarization of the V_L V_L scattering. After
the partial unitarization by the light Higgs boson, the scattering
becomes strongly interacting until it hits one or more heavier Higgs
bosons or other strong dynamics. We analyze how the LHC experiments can
reveal this interesting possibility of partially strong weak gauge boson
scattering.
Transparency!
Contact person: Prof. SH Zhu.
July 16, 2008, Wed, 3PM
Title:
Phase Transitions and the Perfectness of Fluids
Speaker: Jiunn-Wei Chen教授 (Taiwan National Univ)
Abstract:Shear viscosity characterizes how perfect a fluid is---the
smaller the viscosity, the more perfect the fluid is. However, based
on string theory and uncertainty principle, the normalized shear
viscosity (shear viscosity over entropy density) was conjectured to
have a non-zero minimum bound---1/(4 pi). Furthermore, there are
some intimate relations between this bound and phase transitions
that will be explored in this talk.
Contact person: Prof. BQ Ma.
July 15, 2008, Tuesday, 3PM
Title:
Impact of New CTEQ PDF sets to LHC Phenomenology
Speaker: Prof. C.P. Yuan
(MSU)
Abstract:
Contact person: Prof. CS Li.
July 4, 2008, Friday, 3PM
Title:
Physics with Initial State Radiation Events at B-factory Experiments
Speaker: Xinchou Lou
(University of Texas at Dallas)
Abstract: The unprecedented high luminosity of the B-factory experiments at the Stanford Linear Accelerator Center and the Japanese KEK Laboratory afforded physicists the opportunity to explore physics at energies below the nominal Upsilon(4S) mass through the Initial State Radiation (ISR) interactions. The ISR programs were suggested in 1999 and have produced beautiful physics results ranging from the discovery of the Y(4260) state to the scan of exclusive e+e- annihilation interactions at energies up to their production thresholds. Selected topics on the ISR physics results will be presented.
Contact person: Prof. HQ Zheng.
July 3, 2008, 3PM
Title:
The Vortex Lattice in High Temperature Superconductors:
Ideal Lattice, Pinning, and Geometry Effects
Speaker: Prof. E.H. Brandt (Max Planck Institute for Metals Research, Stuttgart)
Abstract: Type-II superconductors like Nobium and many alloys allow magnetic flux to penetrate in form of magnetic flux lines, i.e., vortices of the supercurrent, each vortex carrying one quantum of magnetic flux. This effect was predicted in 1957 by Alexei Abrikosov, who got for this the Nobel Prize in Physics 2003. Abrikosov flux lines arrange to a more or less perfect triangular vortex lattice that exhibits interesting non-local elasticity and structural defects.
It may be plastically deformed or amorphous, and it may even melt into a "vortex liquid". The vortex lattice can be observed by decoration, magneto-optics, neutron scattering, MuSR, and globally by measuring the magnetization curves and electromagnetic response.
Contact person: Prof. DP Li.
July. 2, 2008, Wed.
Title:
Who Ordered the Muon? (the horizontal
symmetry of three generations)
Speaker: Prof. CS Lam
Abstract:
The question of why there is a second, and then a third generation, is more than 70 years old.
It is the first query beyond the Standard Model (SM), posed long before the SM itself was even formulated. Since the SM, and other fashionable theories such as SUSY, GUT, and Superstrings, all rely heavily on symmetry considerations, it is natural to expect the clue for this deep problem to lie with symmetry as well. To this end, the first important task is to find out what this horizontal symmetry is. I will present evidence to show that this symmetry is uniquely S4, the permutation group of four objects, or any group containing it.
Contact person: Prof. KT Chao.
June. 26, 2008,
Title:
A special corner of the landscape
Speaker: Dr. Yang-hui He (Oxford Univ.)
Abstract:
Contact person: Prof. B. Chen.
June. 5, 2008,
Title:
ANISOTROPIC TERMS OF
THE TIME-DEPENDENT
GINZBURG-LANDAU THEORY
Speaker: Prof. P. Lipavski （捷克科学院）
Abstract: 我们将从微观非平衡态多体理论出发,
研究得到各向异性超导体的含时Ginzburg-Landau理论.
Contact person: Prof. DP Li.
May. 27, 2008,
Title:
On the accelerating string and heavy quark energy loss
Speaker: Dr. Bo-Wen Xiao (Columbia University)
Abstract: In this talk, I would like to start with the introduction to the exact accelerating string solution of a heavy quark-antiquark pair in $AdS_5$ space. On the accelerating string, there is a particular scale which separates the radiation and the heavy quark. This scale is explicitly shown to be an event horizon in the proper frame of the heavy quark.
Furthermore, I will describe a new correspondence, which relates the horizon in $AdS_5$ space on the gravity theory side to the Unruh temperature in Minkowski space on the field theory side of the AdS/CFT correspondence. $p_{\perp}$-broadening and energy loss of the heavy quark due to radiation are computed using the AdS/CFT correspondence. In the end, the energy loss and thermalization time of a heavy quark in strongly coupled quark gluon plasma are presented.
Contact person: Prof. BQ Ma.
May. 22, 2008,
Title:
拓扑弦论和矩阵模型
Speaker: Dr. MX Huang (CERN)
Abstract: Topological string theory has been an active research topic in string theory. I give some basic introduction to the formulation of topological string theory and its application, in particular to the problem of counting holomorphic curves in Calabi-Yau manifolds. I review the basic techniques to compute topological string amplitudes as well as some recent advances. More recently, matrix models appear as a new tool for topological string computations.
Contact person: Prof. B Chen.
May. 20, 2008, at 10AM
Title:
Heavy Quark Hybrids and the Color Octet Model for RHIC Study of the QCD Cosmological Phase Transition
Speaker: Prof. Kisslinger (Carnegie Mellon Univ.)
Abstract:
Contact person: Prof. YX liu.
May 13 (Tuesday), 2008,
Location: Physics Building South 408
Title:
Mini-workshop on Physics from Knee, Ankle to GZK Cutoff
Speaker: 丁林恺、高崇寿、胡洪波、毕效军、殷鹏飞、袁强
Abstract: RT
Contact person: Prof. HB Hu and Prof. SH Zhu.
Program:
会议介绍, 朱守华 教授（北京大学）
宇宙线能谱的‘膝’, 丁林恺 研究员（高能物理研究所）
利用对撞机磁谱仪在宇宙线中寻找
稳定的、中性的、弱作用的、大质量的未知粒子, 丁林恺 研究员（高能物理研究所）
羊八井实验及其未来发展, 胡洪波 研究员（高能物理研究所）
Cosmic Ray and Dark Matter, 毕效军 研究员（高能物理研究所）
暗物质粒子和宇宙线, 高崇寿 教授（北京大学）
高能宇宙线光致裂解和第二个膝, 袁强（高能物理研究所）
Ultra-High Energy Cosmic
Rays and Physics Beyond the Standard Model,殷鹏飞 （北京大学）
Apr. 24, 2008,
Title:
Integer Partitions, Exclusion Statistics, Trees
Speaker: Prof. Stephane Ouvry （Orsay）
Abstract:
Contact person: Prof. DP Li.
Apr. 22, 2008, 星期二
Title:
Calculation of Amplitudes and Analytic Properties
Speaker: 冯波 教授，
浙江大学
Abstract:
Contact person: 宋行长 教授.
Apr. 17, 2008,
Title:
灾害性天气和气候研究的数学物理问题
Speaker: 楼森岳 教授（上海交通大学）
Abstract:
演讲者简介
Contact person: 朱世琳 教授.
Apr. 3, 2008,
Title:
(1) Cosmic Rays and the Search for a Violation of Lorentz Invariance
(2) Relating Lattice QCD and Chiral Perturbation Theory
Speaker: Dr. Wolfgang Bietenholz (DESY, Germany )
Abstract:
(1)
We introduce general aspects of cosmic rays, in particular
in view of the GZK energy cutoff. Next we discuss conceivable
possibilities of a spontaneous breaking of Lorentz invariance,
focusing on the scenario of particle specific maximal
attainable velocities. We discuss applications to ultra high
energy cosmic rays and to netrino oscillation.
We also address cosmic photons from blazars or gamma ray bursts.
Precision tests of the photon dispersion relation allow for
conclusions not far below the Planck scale. Finally we review
lastest developpments due new data by the Pierre Auger Collaboration.
(2)
We first discuss conceptual issue related to chiral symmetry on
the lattice. Then we apply chiral lattice fermions in
quenched QCD simulations with light quarks.
In the p-regime we evaluate the masses of light
pseudoscalar and vector mesons, as well as the pion decay constant
F_pi and the renormalisation constant Z_A.
In the epsilon-regime we present results for the leading Low Energy
Constants of the chiral Lagrangian, F_pi and the chiral condensate
Sigma. To this end, we perform fits to predictions by
Random Matrix Theory and by different versions of quenched Chiral
Perturbation Theory, referring to distinct correlation functions.
In addition we measure the topological susceptibility, which is
relevant to explain the mass of the eta prime meson.
Contact person: Prof. SH Zhu.
Mar. 27, 2008,
Title:
Spintronic material design
Speaker: Prof. Xiao Hu（Tsukuba Uni.）
Abstract:
Contact person: Prof. DP Li.
March 5, 2008, Wed, at 3PM
Title:
宇宙中的扰动——平均值问题,暗能量和宇宙观测
Speaker: 李楠博士 (University Bielefeld)
Abstract:
Contact person: Prof. BQ Ma
Joint with DTP-PKU
March 4, 2008, Tuesday, at 10AM
Title:
Status and plans of CMS
Speaker: Dan Green (Fermilab)
Abstract: RT
Contact person: Prof. YJ Mao and Prof. SH Zhu.
Joint with HEC-PKU and ECUST
March 1, 2008,
Location: BIMP (Beijing Institute of Modern Physics)
Title:
Mini-workshop on TeV See-Saw Mechanism at LHC & Neutrino Factory
Speaker: Many speakers
Abstract: RT
Contact person: Prof. W Liao and Prof. SH Zhu.
Program：
09:00-09:45,
Testable Seesaw at LHC, 李田军（中科院理论物理所）
09:45-10:30,
Correlation between the Charged Current Interactions of Light and
Heavy Majorana Neutrinos, 邢志忠（中科院高能物理所）
10:45-11:30,
Signatures of Majorana Neutrinos at Hadron Colliders,
张斌 （清华大学）
11:30-12:15,
Lepton Flavor Violating Muon Decays in a Model of Electroweak-Scale
Right-Handed Neutrinos, 廖益（南开大学）
14:00-14:45,
Weak Interaction Universality Revisited,
李小源（中科院理论物理所）
14:45-15:30,
Non-unitarity of Neutrino Mixing in Oscillation， 廖玮（华东理工大学/北京大学）
16:00-17:30,
自由讨论，所有参加者。
Feb. 21, 2008,
Title:
Understanding Earth Matter Effect in
Neutrino Oscillation
Speaker: Prof. W. Liao（ECUST/HEC-PKU）
Abstract:
Contact person: Prof. SH Zhu.
Pause for holiday!
Jan. 14, 2008, Monday
Title:
Recent Results from Nucleus-Nucleus Collision Physics at RHIC
Speaker: Prof. Huan-Zhong Huang（UCLA）
Abstract:
Contact person: Prof. BQ Ma.
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