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Nonequilibrium statistical mechanics of a two-temperature Ising ring with conserved dynamics
Nicholas Borchers1, Michel Pleimling1, R K P Zia2
1Department of Physics, Virginia Tech, Blacksburg, Virginia 24061-0435, USA.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|January 24, 2015
Summary
Driven Ising models exhibit surprising "freezing by heating" phenomena. Numerical simulations reveal complex relaxation and distinct steady states when systems are far from equilibrium.
Area of Science:
- Statistical mechanics
- Condensed matter physics
- Non-equilibrium systems
Background:
- The one-dimensional Ising model in thermal equilibrium is a foundational concept.
- Systems driven far from equilibrium can display emergent behaviors not seen in equilibrium.
Purpose of the Study:
- To investigate the non-equilibrium dynamics of a one-dimensional Ising model coupled to two baths at different temperatures.
- To explore phenomena such as
- freezing by heating
- and complex relaxation processes.
Main Methods:
- Systematic numerical simulations were employed.
- The study focused on analyzing the behavior of the Ising model under non-equilibrium conditions.
Main Results:
- The driven Ising model exhibited unexpected phenomena, including
- freezing by heating.
- Complex relaxation processes were observed.
- A crossover between two distinct steady-state regimes was identified.
Conclusions:
- The study highlights the rich and counterintuitive physics of driven systems.
- Understanding non-equilibrium phenomena is crucial for various fields, including thermodynamics and materials science.
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