69 citations · 397 across the 22 of their papers we have counts for
6 papers · 1 filter
Numerical analysis of the quantum dots on off-normal incidence ion sputtered surfaces
Emmanuel O. Yewande, Reiner Kree, Alexander K. Hartmann
We implement substrate rotation in a 2+1 dimensional solid-on-solid model of ion beam sputtering of solid surfaces. With this extension of the model, we study the effect of concurr…
What do we learn from correlations of local and global network properties?
Magnus Jungsbluth, Bernd Burghardt, Alexander K. Hartmann
In complex networks a common task is to identify the most important or "central" nodes. There are several definitions, often called centrality measures, which often lead to differe…
Probing tails of energy distributions using importance-sampling in the disorder with a guiding function
Mathias Koerner, Helmut G. Katzgraber, Alexander K. Hartmann
We propose a simple and general procedure based on a recently introduced approach that uses an importance-sampling Monte Carlo algorithm in the disorder to probe to high precision…
Ground-State and Domain-Wall Energies in the Spin-Glass Region of the 2D Random-Bond Ising Model
Ronald Fisch, Alexander K. Hartmann
The statistics of the ground-state and domain-wall energies for the two-dimensional random-bond Ising model on square lattices with independent, identically distributed bonds of pr…
Introduction to graphs
Alexander K. Hartmann, Martin Weigt
Graph theory provides fundamental concepts for many fields of science like statistical physics, network analysis and theoretical computer science. Here we give a pedagogical introd…
Conformal Invariance and SLE in Two-Dimensional Ising Spin Glasses
C. Amoruso, A. K. Hartmann, M. B. Hastings +1
We present numerical evidence that the techniques of conformal field theory might be applicable to two-dimensional Ising spin glasses with Gaussian bond distributions. It is shown…