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5 papers · 1 filter
Lifetime of metastable states and suppression of noise in Interdisciplinary Physical Models
B. Spagnolo, A. A. Dubkov, A. L. Pankratov +3
Transient properties of different physical systems with metastable states perturbed by external white noise have been investigated. Two noise-induced phenomena, namely the noise en…
Evidence of Unconventional Universality Class in a Two-Dimensional Dimerized Quantum Heisenberg Model
Sandro Wenzel, Leszek Bogacz, Wolfhard Janke
The two-dimensional - dimerized quantum Heisenberg model is studied on the square lattice by means of (stochastic series expansion) quantum Monte Carlo simulations as…
Random walkers versus random crowds: diffusion of large matrices
Ewa Gudowska-Nowak, Romuald J. Janik, Jerzy Jurkiewicz +2
We briefly review the random matrix theory for large N by N matrices viewed as free random variables in a context of stochastic diffusion. We establish a surprising link between th…
Population explosion suppressed by noise: Stationary distributions and how to simulate them
P. F. Gora
We show that two dynamical systems exhibiting very different deterministic behaviours possess very similar stationary distributions when stabilized by a multiplicative Gaussian whi…
Array enhanced stochastic resonance and spatially correlated noises
P. F. Gora
We discuss the role of spatial correlations of the noise in the array enhanced stochastic resonance. We show numerically that the noises with negative correlations between differen…