363 citations · 3.8k across the 102 of their papers we have counts for
6 papers · 1 filter
Crossover effects in the random exchange spin-1/2 antiferromagnetic chain
Nicolas laflorencie, Heiko Rieger, Anders W. Sandvik +1
The random antiferromagnetic spin-1/2 XX and XXZ chain is studied numerically for varying strength of the disorder, using exact diagonalization and stochastic series expansion meth…
Aging and scaling laws in -hydroquinone-clathrate
Maikel C. Rheinstädter, Heiko Rieger, Klaus Knorr
The dielectric permittivity of the orientational glass methanol(x=0.73)--hydroquinone-clathrate has been studied as function of temperature and waiting time using different temp…
Constrained spin dynamics description of random walks on hierarchical scale-free networks
Jae Dong Noh, Heiko Rieger
We study a random walk problem on the hierarchical network which is a scale-free network grown deterministically. The random walk problem is mapped onto a dynamical Ising spin chai…
Random Walks on Complex Networks
Jae Dong Noh, Heiko Rieger
We investigate random walks on complex networks and derive an exact expression for the mean first passage time (MFPT) between two nodes. We introduce for each node the random walk…
Entanglement transition of elastic lines in a strongly disordered environment
Viljo Petaja, Mikko Alava, Heiko Rieger
We investigate by exact optimization the geometrical properties of three-dimensional elastic line systems with point disorder and hard-core repulsion. The line 'forests' become ent…
Disorder Induced Phases in Higher Spin Antiferromagnetic Heisenberg Chains
Enrico Carlon, Péter Lajkó, Heiko Rieger +1
Extensive DMRG calculations for spin S=1/2 and S=3/2 disordered antiferromagnetic Heisenberg chains show a rather distinct behavior in the two cases. While at sufficiently strong d…