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5 papers · 2 filters
Dynamics of surface steps
F. Szalma, W. Selke, S. Fischer
In the framework of SOS models, the dynamics of isolated and pairs of surface steps of monoatomic height is studied, for step--edge diffusion and for evaporation kinetics, using Mo…
Griffiths-McCoy singularities in random quantum spin chains: Exact results through renormalization
Ferenc Igloi, Robert Juhasz, Peter Lajko
The Ma-Dasgupta-Hu renormalization group (RG) scheme is used to study singular quantities in the Griffiths phase of random quantum spin chains. For the random transverse-field Isin…
Conformal Profiles in the Hilhorst--van Leeuwen Model
D. Karevski, L. Turban, F. Igloi
We study the critical energy and magnetization profiles for the Ising quantum chain with a marginal extended surface perturbation of the form A/y, y being the distance from the sur…
Long range correlations in the non-equilibrium quantum relaxation of a spin chain
F. Igloi, H. Rieger
We consider the non-stationary quantum relaxation of the Ising spin chain in a transverse field of strength h. Starting from a homogeneously magnetized initial state the system app…
Percolation and Conduction in Restricted Geometries
P. Lajko, L. Turban
The finite-size scaling behaviour for percolation and conduction is studied in two-dimensional triangular-shaped random resistor networks at the percolation threshold. The numerica…