
I Wayan Sudiarta PostDoctoral Fellow Department of Physics and Atmospheric Science Dalhousie University, Halifax, NS, Canada B3H 3J5 sudiarta@dal.ca http://myweb.dal.ca/sudiarta http://physicslive.org http://physicssimulation.blogspot.com 
I am currently developing a new computational procedure to do quantum
simulation of few interacting electrons system at finite temperature.
To do this I solve the time–dependent Schrödinger equation using
the finite difference time domain method (FDTD) and compute thermal
density matrix. From this density matrix I then determine
thermodynamical properties, such as partition function, free energy and
entropy as a function of temperature. Recent preliminary test results
show that the numerical procedure and my computer program successfully
produce thermodynamical properties of few electrons systems in one, two
and three dimensions.
+ WaterGraphite Interaction
I use ab initio quantum chemistry packages, such as Gaussian98
and GAMESS,
to compute interaction energy of a water molecule with a
surface. The interaction energy is then used in molecular
simulation to study adsorption of water molecules on the
surface. I use DL_POLY program for molecular
dynamics
simulation. For molecular
visualization, I use
gOpenMol,
Molden,
and VMD.
+ Building a linux cluster
I have successfully built a cluster of computers using computers in
my office.
The cluster consists of 5 computers: 1 dual intel xeon 2.8 GHz
processor computer,
2 intel pentium 3.2 GHz processor computer,1 intel xeon 2.0 GHz
processor computer, and 1 intel pentium IV 1.8 GHz processor computer.
All computers connected to a Dlink gigabit ethernet switch and each
computer has a gigabit ethernet card.
>>more detail
+
Physics Live CD

+ Finite Difference Time Domain
(FDTD) program
I have created an FDTD program for 3D electromagnetic wave
propagation. I used the FDTD program mainly for investigating the
effective medium
approximation for scattering of heterogeneous particle.
>>more
detail
+ Effective medium approximation (EMA)
Using the FDTD program for 3D electromagnetic wave
propagation, scattering of a EM plane wave by a spherical particle is
simulated. One can then obtain scattering properties as well as the
electric fields inside and outside the particle. From distribution of
electric fields one can defined an effective medium.
>>more
detail
+ Mie Scattering in An Absorbing Medium
+ Linux from
scratch
(LFS)
+ Quantum Monte Carlo (QMC) Program
Other Research Interests
+ Numerical
Simulation of Physical Systems
+ Wave Propagation in Random Media
+ Optical Microscopy
+ Alternative Energy Source
Publications
I W. Sudiarta and D. J. W. Geldart, "The Finite Difference Time Domain Method for Solving The Schrödinger Equation for Many Particles in One Dimension" Am J. Phys. To be Submitted, 2007.
I W. Sudiarta and D. J. W. Geldart, " Numerical Method for Computing SingleParticle Density Matrix" J. Phys. A: Math. Theor. Submitted, 2007.
I W. Sudiarta and D. J. W. Geldart, "Solving the Schrödinger equation using the finite difference time domain method" J. Phys. A: Math. Theor. 40 18851896, 2007
I Wayan Sudiarta and D J Wallace Geldart, "Solving the Schrödinger equation using the finite difference time domain method" J. Phys. A: Math. Theor. 40 18851896, 2007 doi:10.1088/17518113/40/8/013
I.W. Sudiarta and D.J.W. Geldart, "Interaction Energy of a Water Molecule with a SingleLayer Graphitic Surface Modeled by Hydrogen and FluorineTerminated Clusters",
I. W. Sudiarta, " Effective medium approximation for light scattering of heterogeneous particles", PhD Thesis, Dalhousie University, 2003.
I.W. Sudiarta and P. Chylek, "Miescattering formalism for spherical particles embedded in an absorbing medium", J. Opt. Soc. Am. A 18 (6): 12751278 (2001).
I.W. Sudiarta and P. Chylek, "Mie scattering efficiency of a large spherical particle embedded in an absorbing medium", J. Quant. Spectrosc. Radiative Transfer, 70 (46): 709714 (2001).
I. W. Sudiarta, "Confocal microscopy with a CCD camera", Honour thesis, the University of Sydney, 1998.
Programs
+ Finite Difference Time Domain Method Computer Program (C language: fdtdv1.zip)
+ Mie Scattering in Absorbing Medium (Mathematica notebook: absmie.nb)
+ Effective Medium Approximations (Mathematica notebook: emas.nb)