Work

Stochastic two-temperature nonequilibrium Ising model

Year: 2026

Type: article

Abstract: We investigate the nonequilibrium stationary state (NESS) of the two-dimensional Ising model under a stochastic dichotomous modulation of temperature, which alternates between T c ± δ around the critical temperature T c at a rate γ . Both magnetisation and energy exhibit non-monotonic dependence on γ , explained by a renewal approach in the slow-switching limit, while for small δ dynamical response theory quantitatively captures the γ -dependence of the observables. In the fast-switching regime, the NESS appears Boltzmann-like with a γ -dependent effective temperature. However, a finite energy current flowing through the system from hot to cold reservoir confirms the intrinsic nonequilibrium nature of the dynamics.

Source: New Journal of Physics

DOI: 10.1088/1367-2630/ae4776

Authors: Debraj Dutta, Ritwick Sarkar, Urna Basu

Institution: S.N. Bose National Centre for Basic Sciences

Language: English

Topic: Advanced Thermodynamics and Statistical Mechanics

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,610