Program Changes August 2, 2009 Plenary Program Tuesday 8/4 11:10 – 12:00 Leroy L. Chang Memorial Session Chair: Chih-Yung Chien, Speaker：Ping Sheng Tuesday 8/4 20:15 – 21:00 Evening Lecture Speaker: CH Oh
Parallel Program Thursday 8/6 10:30 – 12:10 Atomic Molecular Optical Physics AMO-5: Atomic Molecular Optical I Chair: Zong-Chao Yan Room: 405 (Info. Bldg) 10:55 Ab initio nonperturbative approaches for probing atomic and SI Chu molecular processes in intense ultrashort laser fields withdraw Friday 8/7 08:30 – 10:15 Astronomy and Astrophysics AST-4: Instruments Chair: G Wang Room: 3002 (Phys. Bldg) 08:55 Development of mm- and sub-mm-wave superconducting receivers for radio astronomy Friday 8/7 08:30 – 10:15 Astronomy and Astrophysics AST-4: Instruments Chair: G Wang Room: 3002 (Phys. Bldg) 10:00 Introduction to Hershel and NAOC participation 10:00
The collaborative project of KOSMA moving
SC Shi et al Will be presented by Wen-Lei Shan
MH Huang, S Chen Replaced by following talk ZY Ren
Thursday 8/6 15:45 – 17:15 Chemical Physics CHE-5: Spectroscopy and Dynamics of Nanosystems Chair: Hai-Lung Dai Room: 3001 (Phys. Bldg) 16:35 Theoretical study on reversible transition between peptide nanotubes and ZC Ou-Yang vesicle like structures Moved to CHE-2: 17:15-17:40 Aug 4 Friday 8/7 08:30 – 10:15 Chemical Physics CHE-6: Spectroscopy and Dynamics of Biological Systems Chair: Hai-Lung Dai Room: 3001 (Phys. Bldg) 9:45 Observation of specific spectral phenomena during FRET AD Xia measurements withdraw Friday 8/7 08:30 – 10:10 Computational Physics COM-4: Quantum Computing Chair: Hoi-Fung Chau Room: 3022 (Phys. Bldg) 09:45 Quantum Computation via quantum dots GP Guo Will be presented by Tao Tu Monday 8/3 15:45 – 17:50 Condensed Matter Physics CMP-2: Cuprates & Iron-Pnictide Superconductors Chair: TBA Room: 1001 (Phys. Bldg) 16:10 Unconventional superconductivity in Fe-pnictides revealed by NMR GQ Zheng Replaced by following talk 16:10 High Frequency Characteristics of Bianisotropic Magnetic DS Xue Materials 1
Tuesday 8/4 15:45 – 17:35 Condensed Matter Physics CMP-4: Nanophysics II Chair: XJ Wang, S. Georgia Univ. Room: 1001 (Phys. Bldg) 16:50 Effects of binding modes and anchoring groups on conductance of ZQ Yang, ZY Li, W Sheng alkane chains in nanostructures withdraw Thursday 8/6 10:30 – 12:25 Condensed Matter Physics CMP-5: Spintronics Chair: TBA Room: 1001 (Phys. Bldg) 12:10 Electronic structures and field/current effects in thin films of tetravalent ion doped manganite La0.9Hf0.1MnO3
J Gao, L Wang withdraw
Thursday 8/6 13:30 – 15:15 High Energy Physics HEP-4: TeV-scale Physics and Collider Phenomenology Chair: Jin-Min Yang Room: 027 (Info. Bldg) 14:20 Anomalous gauge couplings of Higgs at LHC: Semileptonic mode in YP Kuang WW scattering Replaced by following talk TJ Li 14:20 SU(3) × SU(2)L × U(1)Y × U(1)aB+bL Model Monday 8/3 13:30 – 15:10 Interdisciplinary Physics INT-1: Particle Acceleration in Lab and Universe Chair: Pisin Chen Room: 2024 (Phys. Bldg) 13:55 Second harmonic and off-axis electron generation in a high intensity AC Ting et al laser produced plasma cavitation withdraw Monday 8/3 15:45 – 17:25 Interdisciplinary Physics INT-2: Particle Astrophysics Chair: Pisin Chen Room: 2024 (Phys. Bldg) 15:45 High energy electron and gamma-ray observation by TANSUO mission
J Chang, TANSUO Will be presented by J. Wu
Monday 8/3 13:30 – 15:15 Nuclear Physics The following two talks in Nuclear Physics will switch the corresponding time slot: (1) NUC-1: Fundamental Symmetry, Neutrino and Electron Scatterings Chair: Jian-Ping Chen (JLab) Room: 021 (Info. Bldg) 13:30 Search for the Electric Dipole Moment of the electron using solidCY Liu state techniques (2) Thursday 8/6 13:30 – 15:15 Nuclear Physics NUC-5: Nuclear Theory Chair: Bo-Qiang Ma (PKU) Room: 021 (Info. Bldg) 13:30 Nucleon structure from lattice QCD KF Liu Thursday 8/6 10:30 – 12:15 Plasma Physics PLA-4: Coherent Radiation / Low Temperature Plasmas Chair: Xiaogang Wang Room: 3006 (Phys. Bldg) 11:20 Superlattice patterns in a dielectric barrier discharge LF Dong, WL Fan, YF He, WL Liu withdraw Monday 8/3 15:45 – 17:30 Statistical and Nonlinear Physics STA-1: Complex networks I Chair: Bin-Hong Wang Room: 3021 (Phys. Bldg) 15:45 Self-sustained oscillation in complex networks of excitable nodes G Hu, XH Liao, Y Qian withdraw Monday 8/3 15:45 – 17:30 Statistical and Nonlinear Physics STA-1: Complex networks I Chair: Bin-Hong Wang Room: 3021 (Phys. Bldg) 16:35 A model for cooperation and competition DR He Replaced by the following talk 16:35 Statistical Mechanics and Dynamical Models of Human BH Wang Behaviors 2
Tuesday 8/4 13:30 – 15:15 Statistical and Nonlinear Physics STA-2: Complex networks II Chair: Gang Hu Room: 3021 (Phys. Bldg) 13:55 Scaling Properties of Spatial Networks: Its Origin and Effect 13:55
Time irreversibility in the quantum system with infinite number of particles
ZR Di et al Replaced by the following talk YP Huo
Poster Program Computational Physics 22 Effects of binding modes and anchoring groups on conductance of alkane chains in nanostructures
ZQ Yang, ZY Li, W Sheng (withdraw)
Nuclear Physics 47 Experimental study on beta-delayed proton decay in the rare-earth region near drip line
SW Xu, ZK Li, YX Xie (withdraw)
New abstracts SU(3)
×
SU(2)L
×
U(1)Y
×
U(1)aB+bL Model
Tianjun Li Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing The Standard Model has two global symmetries: U(1)B baryon symmetry and U(1)L lepton symmetry. We construct the SU(3) × SU(2)L × U(1)Y × U(1)aB+bL model where a linear combination of the U(1)B and U(1)L symmetries is gauged. To cancel the gauge anomaly, we introduce three pairs of vector-like particles. We study the phenomenological constraints on the model. Because the quark and lepton U(1)aB+bL charges are free parameters in our model, we can explain the recent ATIC, PAMELA, FERMI and HESS experiments via dark matter annihilations by choosing suitable quark and lepton charges. This model may be tested at the LHC as well.
Statistical Mechanics and Dynamical Models of Human Behaviors Bing-Hong Wang 1,2 and Da-Ren He 3 1
Institute of Theoretical Physics, Department of Modern Physics, University of Science and Technology of China, Hefei 2 The Research Center for Complex Systems, Shanghai University of Science and Technology, and Shanghai Academy for Systems Sciences, Shanghai 3 School of Physical Science, Yanzhou University, Yangzhou
Increasing recent empirical evidence indicates the extensive existence of heavy tails in the inter-event time distributions of various human behaviors. Based on the queuing theory, the Barabási model and its variations suggest the highest-priority-first protocol to be a potential origin of those heavy tails. However, some human activity patterns, also displaying heavy-tailed temporal statistics, could not be explained by a task-based mechanism. Different from the mainstream, we propose an interest-based model. Both the simulation and analysis indicate a power-law inter-event time distribution with an exponent which is in accordance with some 3
empirical observations in human-initiated systems. [1, 2] I will also present the scaling property of human walking trails. For understanding the origin of the scaling law of human mobility, I provide a model for random walking in a city network. With this two-dimensional hierarchical system, we can simulate the human travel behaviors wandering among many cities with different ranks. Three types of this model have been studied numerically: the regular distributed network structure and the random distributed network structure constituted by the city nodes with different rank but the same zero size; and the random distributed weighted network constituted by the city nodes with different rank and different none-zero size. The simulation results show that, on such hierarchical system, the power law scaling behavior can be emerged for the distribution of journey length between two travels by human. These results can cover almost all the empirical statistics results of human travel, implying that the hierarchical property in traffic system might play an important role for the emergence of the scaling law in human mobility pattern. [3]
References: [1]
Xiao-Pu Han, Tao Zhou and Bing-Hong Wang, Modeling human dynamics with adaptive interest New Journal of Physics vol.10 (2008) 073010 [2] T. Zhou, H.A.T.Kiet, B.J.Kim, B.-H. Wang and P. Holme, Role of activity in human dynamics Europhysics Letters, vol.82, no.2 (2008) 28002 [3] T.Zhou, X.-P. Han and B.-H. Wang; Towards the Understanding of Human Dynamic, in the Book: Science Matters -Humanities as Complex Systems, (Maria Burguete, Lui Lam eds.）Part III Raising Scientific Level, Chapter 12, p.207-233, World Scientific (ICP). E-mail address:
[email protected]
High Frequency Characteristics of Bianisotropic Magnetic Materials Desheng Xue, Guozhi Chai, and Fashen Li Key Lab for Magnetism and Magnetic Materials of the Ministry of Education, School of Physical Science and Technology, Lanzhou University, Lanzhou Higher permeability at high frequencies in magnetic materials is a perpetual requirement for the ceaseless increasing of working frequency of data transmission and multiple access, as well as for the reduction of electromagnetic interference in computers, mobile and Bluetooth devices. However, Snoek’s law indicates that it is difficult to have higher permeability at high working frequency for the majority of the magnetic materials. Based on the Landau-Lifshitz-Gilbert equation, we proposed a more general picture, bianisotropy model. Under the guidance of this picture, better high frequency characteristics has been realized in soft magnetic thin films with bianisotropy. Besides the resonance frequency and the permeability, the anisotropic filed, the coercivity as well as the saturation magnetization of the thin film can be obtained from the field dependence of magnetic spectra. It is found that the high frequency properties of the thin film can be adjusted in a wide range by oblique sputtering, the fr2-H loop is an effective way to determine the saturation magnetization of the thin film, and the higher permeability at high working frequency is caused by a prolate elliptical precession of the magnetization about its equilibrium direction, which can be induced by an artificial or an intrinsic bianisotropy system. This result is important for the planar inductor, micro-transformer, electromagnetic interference suppressor. This work is supported by the NSFC (Grant No. 10774062) and the Keygrant Project of Chinese MOE (Grant No. 309027).
双各向异性磁性材料的高频特性 4
薛德胜，柴国志，李发伸 兰州大学磁学与磁性材料教育部重点实验室 兰州大学物理科学与技术学院，730000 随着电子通讯频率的不断提高和高频通讯越来越强的电磁干扰，在更高频率下寻找更高磁导率的 材料成为人们不断追求的目标。然而，Snoek 极限预示着绝大部分磁性材料不可能在高频下获得高的磁 导率。我们基于磁化强度的动力学方程，朗道-栗夫西兹方程，提出了更加普遍的高频磁性理论模型： 双各向异性模型；找到了一类具有良好高频磁性的双各向异性软磁薄膜材料；通过测量磁谱随外场的变 化，不仅获得了薄膜的共振频率和磁导率，而且获得了薄膜的各向异性场、矫顽力以及其它技术难以获 得的饱和磁化强度。结果表明，斜溅射可以实现高频磁性的大范围调控；fr2-H 回线是确定薄膜样品饱 和磁化强度的有效手段；高频下的高磁导率来自于磁化强度绕易磁化方向的扁椭圆进动。该结果对于薄 膜电感和微带天线等电磁传输器件及抗电磁干扰材料的发展具有参考价值。 该工作得到了国家自然科学基金项目（10774062）和教育部重大项目（309027)的支持。
5
