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Conversations about Computational Physics

10-13th October, 1999, Technion, Haifa

This informal workshop will include talks by members of the GIF collaboration on ``Novel Computational Approach to Disordered and Complex Systems'' and others. Each day will focus on a different topic. Participation in the lectures and discussions is free but places must be reserved in advance. Please send email to Joan Adler (phr76ja@phjoan.technion.ac.il) to reserve places in the lecture room, and indicate which days you will be coming.

Programme

All talks are of 45 minutes length with 5 minutes for questions and will be in ``Seminarim Gimmel'' (rm 471) in the Physics Building at the Technion. Coffee/Tea will be served at 10:20 each morning, and following the afternoon session.

Sunday 10th October, tutorials for graduate students and postdocs.

At 14:00 a hands-on tutorial about visualization for MC/MD is scheduled.

Monday 11th October, talks and discussions about the Series Expansion Method applied to Disordered and Complex Systems.

    9:30-12:10 Morning Session:

  1. Joan Adler, Physics Department, Technion, Israel, ``Introduction to Models and Methods''
  2. Amnon Aharony, School of Physics and Astronomy, Tel Aviv University, Israel, ``Addressing Frontline Physics Issues with Series Techniques''
  3. Wolfhard Janke, Institute of Theoretical Physics, U. Leipzig, Germany, ``Series Analysis of 2D Random-Bond Ising Ferromagnets''

    14:00-16:00 Afternoon session:

  4. Miek Hellmund, Institute of Theoretical Physics, U. Leipzig, Germany, ``Star Graph Expansions for Potts Random Ferromagnets''
  5. Daniel Daboul, School of Physics and Astronomy, Tel Aviv University, Israel, ``Series Expansion Studies for Two-Dimensional Percolation: The Classical and the Quantum Case''

Tuesday 12th October, talks and discussions about Monte Carlo/Molecular Dynamics simulations applied to Disordered and Complex Systems of Statistical Physics including biological applications, as well as talks about experimental results motivating further calculations.

    9:30-12:10 Morning session:

  1. Dietrich Stauffer, Institute of Theoretical Physics, U. Koeln, Germany, ``Is the fossil record indicative of a critical system ?'' (N. Jan, L. Moseley, T.S. Ray and D. Stauffer Adv. Complex Systems, in press)
  2. Wolfhard Janke, Institute of Theoretical Physics, U. Leipzig, ``Exploring Overlap Barriers in Spin Glasses with Monte Carlo Simulations'',
  3. Sorin Solomon, ``The Importance of Being Discrete: Systems made of individual elements survive where continous ones die''

    14:00-16:00 Afternoon session:

  4. Amit Keren, Physics Department, Technion, Israel,"Magnetic-field time scaling relations and exotic spin correlations: A muSR study of spin glasses".
  5. Ellad Tadmor, Mechanical Engineering, Technion, Israel, ``Resistance Measurements during Silicon Nanoindentation''.

Wednesday 13th October, talks and discussions about quantum and classical Molecular Dynamics/Monte Carlo approaches to Disordered and Complex Systems in Condensed Matter Physics, Engineering and Materials Science.

    9:30-12:10 Morning Session:

  1. Walter Kob, Physics Department, U. Mainz, Germany, ``Equilibrium and out-of-equilibrium dynamics of glass forming liquids''.
  2. David Saada, Physics Department and Solid State Institute, Technion, Israel, ``A New Lowest Energy site for Hydrogen in Diamond''
  3. Dennis Rapaport, Physics Department, Bar-Ilan University, Israel, ``Interactively Exploring Supramolecular Assembly: A Molecular Dynamics Approach to Virus Construction.''

    The self-assembly of polyhedral virus shells (capsids) provides a fascinating example of the complex processes that occur in the simplest of organisms. Little is known about assembly mechanisms, but the fact that different viruses adopt similar structures hints at common design principles and suggests that simplified models ought to be helpful in understanding the process. In order to establish the viability of this approach we have carried out molecular dynamics simulations in which relatively large polyhedral shells assemble spontaneously. Interactive computer visualization plays an important role in this work, and the talk includes a series of molecular dynamics demonstrations of various kinds that illustrate the power of the technique, and which eventually lead to the software used in the self-assembly work. (need XGA (1024*768) projector.)

    14:30-16:00 Afternoon Session:

  4. Adham Hashibon, Physics Department, Technion, Israel, ``Atomistic Simulations of Metal-Ceramic Interfaces''
  5. Ofer Biham, Physics Department, Hebrew University, Jerusalem, Israel, ``Simulations of diffusion and growth on metal surfaces''

    In this talk I present studies of the growth kinetics of thin metal films in molecular beam epitaxy. In these studies we construct models that quantitatively describe self diffusion, nucleation and growth on most FCC(001) metal surfaces at the atomic scale. We use kinetic Monte Carlo simulations based on these models to provide a link between the processses at the atomic scale and the resulting morphologies and scaling measured experimentally at larger scales.

Details about participants and instructions for visitors from out of Haifa are HERE