Informal seminar on Statistical Physics: "Scattering properties of ground states in the 3-d random-field Ising model"
Starts 7 Oct 2011 11:30
Ends 7 Oct 2011 20:00
Central European Time
Leonardo da Vinci Building Luigi Stasi Seminar Room
Strada Costiera, 11
I - 34151 Trieste (Italy)
We study the ground-state (T = 0) morphologies in the d = 3 random-field Ising model (RFIM) using a computationally efficient graph-cut method. We focus on ground states which arise for disorder strengths lower or higher than the critical disorder strength at T = 0. These states consist of correlated “domains” of up and down spins which are separated by rough, fractal interfaces. They show novel scattering properties with a cusp singularity in the correlation function at short distances.