582 citations · 1.1k across the 24 of their papers we have counts for
8 papers · 1 filter
First excitations in two- and three-dimensional random-field Ising systems
Martin Zumsande, Mikko J. Alava, Alexander K. Hartmann
We present results on the first excited states for the random-field Ising model. These are based on an exact algorithm, with which we study the excitation energies and the excitati…
Fluctuations in fluid invasion into disordered media
Martin Rost, Lasse Laurson, Martin Dube +1
Interfaces moving in a disordered medium exhibit stochastic velocity fluctuations obeying universal scaling relations related to the presence or absence of conservation laws. For f…
Morphology of two dimensional fracture surface
Mikko J. Alava, Phani K. V. V. Nukala, Stefano Zapperi
We consider the morphology of two dimensional cracks observed in experimental results obtained from paper samples and compare these results with the numerical simulations of the ra…
Crackling noise in paper peeling
L. I. Salminen, J. M. Pulakka, J. Rosti +2
Acoustic emission or crackling noise is measured from an experiment on splitting or peeling of paper. The energy of the events follows a power-law, with an exponent $β\sim 1.8\pm 0…
Optimization in random field Ising models by quantum annealing
Matti Sarjala, Viljo Petäjä, Mikko Alava
We investigate the properties of quantum annealing applied to the random field Ising model in one, two and three dimensions. The decay rate of the residual energy, defined as the e…
Surface criticality in random field magnets
L. Laurson, M. J. Alava
The boundary-induced scaling of three-dimensional random field Ising magnets is investigated close to the bulk critical point by exact combinatorial optimization methods. We measur…