162 citations · 1k across the 26 of their papers we have counts for
4 papers · 1 filter
Griffiths-McCoy Singularities in the Random Transverse-Field Ising Spin Chain
F. Igloi, R. Juhasz, H. Rieger
We consider the paramagnetic phase of the random transverse-field Ising spin chain and study the dynamical properties by numerical methods and scaling considerations. We extend our…
Average persistence in random walks
H. Rieger, F. Igloi
We study the first passage time properties of an integrated Brownian curve both in homogeneous and disordered environments. In a disordered medium we relate the scaling properties…
Application of a minimum cost flow algorithm to the three-dimensional gauge glass model with screening
J. Kisker, H. Rieger
We study the three-dimensional gauge glass model in the limit of strong screening by using a minimum cost flow algorithm, enabling us to obtain EXACT ground states for systems of l…
Comparative study of the critical behavior in one-dimensional random and aperiodic environments
F. Igloi, D. Karevski, H. Rieger
We consider cooperative processes (quantum spin chains and random walks) in one-dimensional fluctuating random and aperiodic environments characterized by fluctuating exponents ome…