162 citations · 1k across the 26 of their papers we have counts for
4 papers · 1 filter
Ground states versus low-temperature equilibria in random field Ising chains
G. Schröder, T. Knetter, M. J. Alava +1
We discuss with the aid of random walk arguments and exact numerical computations the magnetization properties of one-dimensional random field chains. The ground state structure is…
Random quantum magnets with broad disorder distribution
D. Karevski, Y-C. Lin, H. Rieger +2
We study the critical behavior of Ising quantum magnets with broadly distributed random couplings (J), such that , , for large (Lévy fl…
Ground-States of Two Directed Polymers
V. T. Petaja, M. J. Alava, H. Rieger
Joint ground states of two directed polymers in a random medium are investigated. Using exact min-cost flow optimization the true two-line ground-state is compared with the single…
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…