Presentations Posters and participants

Prof.  Jeff Z. Y. Chen                    (University of Waterloo,

Waterloo, Ontario N2L3G1, Canada)

Email: jeffchen@sciborg.uwaterloo.ca
Tel: 519-888-4567 Extension 35361
http://www.sciborg.uwaterloo.ca/~jeffchen

trip: Nov 9 – 12    Lily hotel

Arrival: Nov 9, Hangzhou MU 594 at 14:00.

      Departure: Nov 12, Hangzhou MU 595 at 15:00

Monte Carlo simulations of the interaction between polymers and a membrane

A Monte Carlo algorithm is presented to directly simulate the Helfrich energy model for the description of a fluctuating surface. Monte Carlo simulations are presented for

(A) the structural transition of a self-avoiding polymer confined in an elastic soft tube and

(B) the induced capillary force between two colloid particles adsorbed on membrane surface.

An extended regime in the parameter space has been explored where various scaling properties can be viewed and compared with theoretical results.

Prof. Fereydoon Family (Department of Physics, Emory University,
Atlanta, GA 30322, U.S.A.)

e-mail: phyff@emory.edu

trip:   arrive Shanghai Nov 03, 8:40 PM, depart Shanghai Nov 12, 9:35 AM

        Nov. 3 - 6 in Shanghai Laofandian,

Nov. 11 in Shanghai Airlines Travel Hotel Pudong Airport Branch

The morning of Nov. 6 to Xian, Nov 9 at 14:00 back Hangzhou

Nov. 9 – 11, Jinxi hotel

Talk 1 (can be divided into two)

Kinetics of Thin Film Growth

The ability to probe and manipulate matter on an atomic scale has made it possible to grow thin-films with novel structures and materials properties. In this talk I will review some of the theoretical and computational work that we have developed for understanding the kinetics of thin film growth both in the submonolayer and multilayer regimes.

Talk 2

Physics of Macular Degeneration

Macular Degeneration is the leading cause of blindness in persons over the age of 50. In this talk I will review the results of our recent approach to model choroidal neovascularization, which is the

leading cause of AMD.

Prof. Jin-Qing Fang (China Institute of Atomic Energy,

Beijing 102413, China)

e-mail: fjq96@126.com

trip: Nov 9 – 12 Lingfeng hotel

Evolution Features of Large Unifying Hybrid Network Model with a Variable Growing Speeds

In many real-world growing networks, e.g. Internet, WWW, biological networks and so on, the mean number of connections per vertex and the number of weighted edges are varied as time evolution. To improve the large unifying hybrid Network Model(LUHNM) proposed by us previously, we further introduce a variable growing format, such as the number of added edges follows m(t) = p(t)(N(t))^α，where is a variable exponent, N(t) is size of the growing network at t time, p(t) is a probabilistic number of links at t time, to consider the LUHNM with a variable growing speeds. In this report, we show that the variable growth speeds effect on the characteristics of the LUHNM largely, and reveal the new topological properties (assortativity and clustering coefficient ) of the LUHNM with three hybrid ratios. We discuss main results of the different growing variable speeds (deceleration (<0), normal (=0), acceleration (0<<1) and hyper-acceleration (>1)), and observe some new evolution features of the LUHNM by numerically simulation.

Prof. Michael Geller (Department of Physics, University of Georgia,
Athens, GA 30602, USA)

e-mail: mgeller@uga.edu

trip: arrive Shanghai at 20:45 on Nov.02 Northwest flight 25
      depart Shanghai at 09:35 on Nov.12 NW 26
      Nov. 2 - 4 in Shanghai taken care of by Fei Ren
      The morning of Nov 4 to Xian, Nov 9 at 14:00 back Hangzhou
      Nov. 9–12, Jinxi hotel

Quantum computer design

A quantum computer, if one could be built, would transform information technology by providing vastly increased computational power for certain specialized tasks, such as searching databases or breaking codes. The purpose of quantum gate design is to theoretically determine the actual computational power of a proposed quantum computing architecture, such as trapped ions or superconducting circuits, and to design, simulate, and optimize real quantum gates and algorithm implementations for that architecture. Work is done in collaboration with the UCSB superconducting quantum computation program and our quantum gate design methods will be applied to that architecture.

Talks in Xian

Quantum gate design I: Superconducting circuits

Quantum gate design II: Controled NOT logic

Prof. Bambi Hu (Department of Physics, Hong Kong Baptist University
Kowloon Tong, Kowloon, Hong Kong)

email: bhu@net2.hkbu.edu.hk

trip : Nov 10 -13 Jinxi hotel， upper floor

arriving Hangzhou Nov 10 at 14:30 by Dragonair KA 620;

       departing Hangzhou Nov 13 at 15:25 by KA 621.

 Zhanghong picks up

Prof. C.K. Hu (Institute of Physics, Academia Sinica,
Taipei 11529,Taiwan)

e-mail: huck@phys.sinica.edu.tw　

trip: Nov 9 - 12 Jinxi hotel

arriving Hangzhou Nov 9 at 14:30 by Dragonair KA 620

Numerical Approach to Synchronization of Coupled Nonlinear Systems

Synchronization appears in a variety of phenomena. In this talk, I
briefly review our researches about synchronization in nonlinear
coupled systems. The topics under discussion include:
(1) synchronization and coherence in thermodynamic coupled map lattices
with intermediate-range coupling [Phys. Rev. E 60, 4966 (1999)],
(2)synchronous chaos in coupled map lattices with small-world
interactions [Phys. Rev. E 62, 6409 (2000)],
(3) synchronization for systems on scale-free networks
[Phys. Rev. E 71, 016211 and 016211 (2005)],
(4) universality and scaling in transition to synchronous chaos
with local-global interactions [Phys. Rev. E 73, 036212 (2006)],
(5) influence of noises on the synchronization of the stochastic
Kuramoto model [Phys. Rev. E 76, in press (2007)].

Prof. M.C. Huang (Chung Yuan Christian University, Taiwan)

e-mail: ming@phys.cycu.edu.tw

trip: Nov 9–12 Lily hotel

Stochastic Monte Carlo Simulations on Protein Foldings in HP model

Prof. Xiao Hu (Computational Materials Science Center,
National Institute for Materials Science,
Sengen 1-2-1, Tsukuba 305-0047, Japan)

e-mail: HU.Xiao@nims.go.jp
tel: +81-29-859-2661
fax: +81-29-859-2601

trip: Nov 9 – 12      Lily hotel
       arriving Hangzhou Nov. 9 at 12:50 by NH929
       Luo Mengbo picks up

Simulation on Vortex Glasses

Vortices in type II superconductors form Abrikosov lattice in clean limit. Pinning centers change the vortex states in many ways, which is interesting both academically and for applications. In the present talk, I concentrate on the case of randomly distributed point-like defects, in which the Abrkosov vortex lattice is deformed into the so-called Bragg glass and vortex glass. I will introduce our dynamics simulation on the current-driven vortices, with the focus on the zero-temperature depinning transition as well as creep motion at low temperatures and close to the depinning point. Scaling features have been revealed which unifies the depin and creep motions [1]. Arrhenius-type, which covers the famous Anderson-Kim theory, and non-Arrhenius-type creeps have been found in vortex glass and Bragg glass, respectively. We then discuss a possible new phase transition at intermediate temperatures in light of the replica symmetry breaking [2].

This talk is based on the work in collaboration with M.-B. Luo of Zhejiang University.

[1] M.-B. Luo and X. Hu: Phys. Rev. Lett. Vol. 98, 267002 (2007).

[2] M.-B. Luo and X. Hu: in preparation.

Prof. Nobuyasu Ito (Department of Applied Physics, School of Engineering,
The University of Tokyo, Tokyo 113-8656, JAPAN)

e-mail: ito@ap.t.u-tokyo.ac.jp TF0469075

trip: Nov. 9–12     Lily hotel

arriving Hangzhou Nov. 9 at 12:50 by NH929

      departing Nov 12 from Shanghai, Hongqiao airport at 13:45

  Possibly Mengbo picks up

Nanoengine simulation

Prof. Lui LAM (Physics Department, San Jose State University,

San Jose, CA 95192, USA)

Email: lui2002lam@yahoo.com

trip: Nov. 10–12 Lily hotel

Science Matters: The Newest and Biggest Interdiscipline

What is science? The answer is: Everything in nature is a part of science. What people call “natural science” is actually the science of simple systems; humanities/social sciences belong to the science of complex systems. Here, the origin of the “two cultures” (humanities and “science”) is discussed and relevant problems clarified. The notion of “integrating humanities with science” is a misleading issue, since humanities are part of science, too. Science Matters is the new interdiscipline about all human-dependent knowledge. The basic viewpoint and approach is: humanities/social sciences is studied as part of science, by following the good tradition of Aristotle, using the successful experience gained in physics (especially statistical physics) and other disciplines, and viewing them as complex systems. Histophysics (the physics-of-history discipline) is presented as an example on how to do this.

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Lui Lam obtained his B.Sc. from the University of Hong Kong, M.Sc. from the University of British Columbia, and Ph.D. from Columbia University. He is a physics professor at San Jose State University and a guest professor at both the Chinese Academy of Sciences and the China Association for Science and Technology. Prof. Lam invented bowlics (1982), one of three existing types of liquid crystals in the world; active walks (1992), a new paradigm in complex systems; and a new discipline called histophysics (2002). Lam published 11 books and over 160 scientific papers. He is the founder and editor-in-chief of two book series, Science Matters (World Scientific) and Partially Ordered Systems (Springer), the founder of the International Liquid Crystal Society (1990), the cofounder of the Chinese Liquid Crystal Society (1980), and editorial member of two journals, Physics and Science Popularization.

Prof. David P. Landau (Center for Simulational Physics,
University of Georgia,Athens, GA 30602, USA)

e-mail: dlandau@hal.physast.uga.edu

trip: arrive Shanghai at 20:45 on Nov.02 Northwest flight 25
      depart Shanghai at 09:25 on Nov.16 Northwest flight 26
      Nov. 2 - 4 in Shanghai taken care of by Fei Ren
      The morning of Nov 4 to Xian, Nov 9 at 14:00 back Hangzhou
      Jinxi hotel

Talk 1

Monte Carlo Simulations of Critical Endpoint Behavior:

--A 'New' Old Problem

Talk 2

Numerical Integration with Wang-Landau Sampling

Prof. Hoongchien Lee  (Graduate Institute of Systems Biology and Bioinfo.
                       & Department of Physics, National Central University,
                       Zhongli, Taiwan)

e-mail: hclee@sansan.phy.ncu.edu.tw

trip: arriving Hangzhou Nov 9 at 20:10 via MU 596.

leaving HangZhou Nov 12 at 13:45

Apartment

Genomes: at the edge of chaos with maximum information capacity

The notion of “Life at the edge of chaos” is quantified through

an order index, _, that measures the randomness of genomic sequences

by mapping sequences to real numbers ranging from 1

(ordered sequence) to 0 (random sequence of infinite length). The

786 complete genomic sequences extant in GenBank are found to

have _ values residing in a very narrow range, 0.037±0.027, implying

that genomes are halfway towards being completely random,

namely, at the edge of chaos. The average _ values of six classical

literature works, including the King James edition of the

Bible, Shakespeare’s Sonnets and Joyce’s Ulysses, and ranging in

length from 80 k to 5.9 M letters, is 0.039±0.011, namely, just like

genomes. We discuss possible meanings of these findings in the

context of the evolution of genomes as an information carrier. It

is suggested that genomes reside in the neighborhood of a fixedpoint

in the space of sequences, driven there by the dynamics of

a robust, predominantly neutral evolutionary process.

Dr. Jung-Hsin Lin   (Division of Mechanics, Research Center for Applied Sciences &

Institute of Biomedical Sciences, Academia Sinica, Taiwan)

e-mail: jlin@ntu.edu.tw

http://rx.mc.ntu.edu.tw/~jlin/

Tel: +886 2 2312 3456 ext 8404; FAX: +886 2 2391 9098

trip: cancelled

Mr. Shi-zeng Lin * (Computational Materials Science Center,
National Institute for Materials Science,
Sengen 1-2-1, Tsukuba 305-0047, Japan ;
Zhejiang University, Zhejiang Institute of Modern Physics,
Hangzhou 310027, China)

e-mail: LIN.Shizeng@nims.go.jp

trip: Nov 9 - 12, Yuquan hotel

Terahertz Emission from High-Tc Superconductors

Solving coupled nonlinear sine-Gordon equations and Maxwell equations numerically, we study the electromagnetic and superconducting properties of the single crystal of high-Tc superconductor Bi-2212 with a static magnetic field applied parallel to the ab-plane and a dc current fed in along the c-axis. Cavity resonances of transverse plasma occur in the intrinsic Josephson junctions with frequencies in terahertz regime. It is revealed that the electromagnetic wave can transmit from the junctions into space. The emitted energy counted by the Poynting vector is about 400W/cm^2. The frequency as well as the energy of emission can be tuned almost continuously by the current and magnetic field.

Ref. : Shizeng Lin, Xiao Hu, Masashi Tachiki, http://arxiv.org/abs/0709.0580

Prof. Zonghua Liu (Department of Physics, East-China Normal University,
Shanghai, PR China)

e-mail: zhliu@phy.ecnu.edu.cn

trip: Nov 10–12 Lingfeng hotel

Spatial phase and generalized synchronization

It is usually believed that generalized synchronization cannot be measured by a quantity depending only on the plane phase in $2D$ space. However, we here show that it will become possible if the plane phase is generalized to a {\it spatial phase}, which characterizes the rotational behavior of an arbitrary high dimensional ($n>2$) trajectory. Compared with the plane phase defined for a $2D$ projected trajectory, the spatial phase uniquely defined for an original $nD$ trajectory reflects the accumulation of spatial angles connected to small arcs of trajectory and turns out to be useful to analyze synchronization of coupled systems. Actually we introduce an order parameter to measure the generalized synchronization in two coupled chaotic oscillators based on the spatial phase and demonstrate its utility to experimental time series.

Prof. Y.Q. Ma (National Laboratory. of Solid State Microstructures,
Nanjing University, Nanjing 210093, China)

e-mail: myqiang@nju.edu.cn

trip: Nov. 11 -12

Prof. M. Suzuki (Tokyo University of Science, Japan)

canceled

Prof. Lei-Han Tang (Department of Physics, Hong Kong Baptist University
Kowloon Tong, Kowloon, Hong Kong)

email: lhtang@hkbu.edu.hk
tel: (852) 3411 7031
fax: (852) 3411 5813

trip: Hangzhou, Nov 10 - 12, Lily hotel
　

Finite-size scaling in the Kuramoto model *

The Kuramoto model describes the synchronization phenomenon in coupled random frequency oscillators. Despite extensive analytical and numerical studies in the past, many open issues remain. An interesting but challenging problem is the description of the scaling properties of the entrained cluster (e.g., size, stability, dynamics, etc.) at the entrainment transition, in a finite population of oscillators. We report a recent analysis of this problem using the mean field theory, as well as results

from numerical investigations using different oscillator frequency models, which indicate a surprising nonuniversal behavior. The finite-size scaling properties of the Kuramoto model on a hypercubic lattice in finite dimensions, and on complex networks will also be briefly discussed.

* In collaboration with Hyunsuk Hong, Hyunggyu Park, and Hugues Chate.　

Prof. Synge Todo (Department of Applied Physics, University of Tokyo,

Tokyo 113-8656, Japan)

e-mail: wistaria@ap.t.u-tokyo.ac.jp
Fax: +81-3-5841-8802

trip: Arrival:    9th Nov 16:40   at Shanghai-Pudong by JL621

      Departure: 13th Nov 12:00 from Shanghai-Pudong by JL622

      Lily hotel

Order-N Monte Carlo algorithm for spin systems with long-range interaction

Existence of long-range interactions drastically modifies the critical behavior of the spin system. For example, it is known that the one-dimensional ferromagnetic Ising model with inverse-square long-range

interaction has a finite-temperature Kosterlitz-Thouless-type transition, at which the magnetization exhibits a "universal jump". In numerical studies of long-range systems, however, the CPU cost

proportional to the square of the number of spins has been a bottleneck for simulating large lattices. With the aim of resolving this difficulty, we propose two new Monte Carlo methods. One is the Swendsen-Wang/Wolff cluster algorithm and the other is single-spin flip algorithm. Both methods are of O(N) in CPU time. We show that the detailed balance condition is strictly satisfied and explain how the speed gets O(N). We also present results for Ising system with dipole interaction simulated with the help of O(N) replica exchange method as well as generalization to quantum spin models.

Prof. B.H. Wang       (Department of Modern Physics,

University of Science and Technology of China,

Hefei Anhui, 230026, PR China)

e-mail: bhwang@ustc.edu.cn

trip: Nov 9–12 Lily hotel

Cooperation from Evolutionary Games on Networks

Since the spatial structure is introduced into the evolutionary games by Nowak and May, there has been a continuous effort on exploring effects of spatial structures on the cooperation. It has been found that the spatial structure promotes evolution of cooperation in the prisoner’s dilemma game (PDG), while in contrast often inhibits cooperative behavior in the snowdrift game (SG). In recent years, extensive studies indicate that many real networks are far different from regular lattices, instead, show small-world and scale-free topological properties. Hence, it is naturally to consider evolutionary games on networks with these kinds of properties. An interesting result found by Santos and Pacheco is that “Scale-free networks provide a unifying framework for the emergence of cooperation”.

In this talk, I review some of our works in the field of evolutionary games. By means of some simple models, we have studied how an important topological structural feature and the average degree affect the cooperative behavior. We found there exists the highest cooperation level induced by an optimal value of average degree for different types of networks. Besides, we investigate the randomness effect on the cooperative behavior by introducing both topological and dynamical randomness. We found a resonance type phenomena reflected by the existence of highest level of cooperation in the case of appropriate randomness. Moreover, we propose a memory-based snowdrift game over complex networks. Some very interesting behaviors are observed, such as the non-monotonous behavior of frequency of cooperation as a function of payoff parameter, spatial pattern transition and so on.

Dr. Ming-Chya Wu,       (Research Center for Adaptive Data Analysis,

National Central University, Taiwan)

E-mail: mcwu@phys.sinica.edu.tw; mcwu@ncu.edu.tw

http://www.ncu.edu.tw/~mcw

trip : Nov 9 – 12      Lily hotel

Phase statistics approach to time series

In this talk, I will review an approach we introduced recently to study physiological and financial time series. The approach mainly consists of an application of the empirical mode decomposition to decompose an empirical time series into a number of intrinsic mode functions (IMFs), calculation of the instantaneous phase of the resultant IMFs, and the statistics of the instantaneous phase for each IMF. To illustrate the approach, we consider two examples: the phase distribution and phase correlation of financial time series, and the temporal evolution for the phase histogram of ECG during human ventricular fibrillation.

References:

1. M.-C. Wu, M.-C. Huang, H.-C. Yu, and T.C. Chiang, Phase distribution and phase correlation of financial time series, Phys. Rev. E 73, 016118 (2006).

2. M.-C. Wu and C.-K. Hu, Empirical mode decomposition and synchrogram approach to cardiorespiratory synchronization, Phys. Rev. E 73, 051917 (2006).

3. M.-C. Wu, Phase correlation of foreign exchange time series, Physica A 375, 633-642 (2007).

4. M.-C. Wu, Phase statistics approach to time series analysis, J. Korean Phys. Soc. 50, 304-312 (2007).

5. M.-C. Wu, Phase statistics approach to physiological and financial time series, AAPPS Bulletin 17, 21-26 (2007).

6. M.-C. Wu, Z. R. Struzik, E. Watanabe, Y. Yamamoto, and C.-K. Hu, Temporal evolution for the phase histogram of ECG during human ventricular fibrillation, AIP Conference proceedings 922, 573-576 (2007).

Dr. Jian-min Yuan        (Department of Physics, Drexel University,

3141 Chestnut Street, Philadelphia, PA 19104-2875, USA)

E-mail: yuanjm@drexel.edu

Tel: 215-895-2722, Fax: 215-895-5934

trip: Nov. 9 - 12    Lily hotel