• DOI:10.1103/PHYSREVRESEARCH.2.033182
• Corpus ID: 211082623

Ising model with stochastic resetting

@article{Magoni2020IsingMW,
  title={Ising model with stochastic resetting},
  author={Matteo Magoni and Satya N. Majumdar and Gr{\'e}gory Schehr},
  journal={arXiv: Statistical Mechanics},
  year={2020}
}

• Matteo Magoni, S. Majumdar, G. Schehr
• Published 12 February 2020
• Physics
• arXiv: Statistical Mechanics

We study the stationary properties of the Ising model that, while evolving towards its equilibrium state at temperature $T$ according to the Glauber dynamics, is stochastically reset to its fixed initial configuration with magnetisation $m_0$ at a constant rate $r$. Resetting breaks detailed balance and drives the system to a non-equilibrium stationary state where the magnetisation acquires a nontrivial distribution, leading to a rich phase diagram in the $(T,r)$ plane. We establish these results exactly in one-dimension and present scaling arguments supported by numerical simulations in two-dimensions. We show that resetting gives rise to a novel "pseudo-ferro" phase in the $(T,r)$ plane for $r > r^*(T)$ and $T>T_c$ where $r^*(T)$ is a crossover line separating the pseudo-ferro phase from a paramagnetic phase. This pseudo-ferro phase is characterised by a non-zero typical magnetisation and a vanishing gap near $m=0$ of the magnetisation distribution.