32 citations · 86 across the 9 of their papers we have counts for
9 papers
Test of Universality in the Ising Spin Glass Using High Temperature Graph Expansion
Daniel Daboul, Iksoo Chang, Amnon Aharony
We calculate high-temperature graph expansions for the Ising spin glass model with 4 symmetric random distribution functions for its nearest neighbor interaction constants J_{ij}.…
Protein threading by learning
Iksoo Chang, Marek Cieplak, Ruxandra I. Dima +2
Using techniques borrowed from statistical physics and neural networks, we determine the parameters, associated with a scoring function, that are chosen optimally to ensure complet…
Sznajd sociophysics model on a triangular lattice: ferro and antiferromagnetic opinions
Iksoo Chang
The Sznajd sociophysics model is generalized on the triangular lattice with pure antiferromagnetic opinion and also with both ferromagnetic and antiferromagnetic opinions. The slog…
Asymmetries, Correlations and Fat Tails in Percolation Market Model
I. Chang, D. Stauffer, R. B. Pandey
Modifications of the Cont-Bouchaud percolation model for price fluctuations give an asymmetry for time-reversal, an asymmetry between high and low prices, volatility clustering, ef…
Time-reversal asymmetry in Cont-Bouchaud stock market model
Iksoo Chang, Dietrich Stauffer
The percolation model of stock market speculation allows an asymmetry (in the return distribution) leading to fast downward crashes and slow upward recovery. We see more small uptu…
Anisotropic Domain Growth of ANNNI Model at Low Temperatures
Mookyung Cheon, Iksoo Chang
We investigate the ordering kinetics for axial next nearest neighbor Ising (ANNNI) model in one and two dimensions by the multi-spin heat bath dynamical simulation. This dynamics e…