• DOI:10.1103/PhysRevB.94.144103
• Corpus ID: 118381680

Theory of driven nonequilibrium critical phenomena

@article{Feng2016TheoryOD,
  title={Theory of driven nonequilibrium critical phenomena},
  author={Bao-Feng Feng and Shuai Yin and Fan Zhong},
  journal={Physical Review B},
  year={2016},
  volume={94},
  pages={144103}
}

• B. Feng, Shuai Yin, F. Zhong
• Published 15 April 2016
• Physics
• Physical Review B

A system driven in the vicinity of its critical point by varying a relevant field in an arbitrary function of time is a generic system that possesses a long relaxation time compared with the driving time scale and thus represents a large class of nonequilibrium systems. For such a manifestly nonlinear nonequilibrium strongly fluctuating system, we show that there exists universal nonequilibrium critical behavior that is incredibly well described by its equilibrium critical properties. A dynamic renormalization-group theory is developed to account for the behavior. The weak driving may give rise to several time scales depending on its form and thus rich nonequilibrium phenomena of various regimes and their crossovers, negative susceptibilities, as well as a violation of fluctuation-dissipation theorem and hysteresis. An initial condition that can be in either equilibrium or nonequilibrium but has longer correlations than the driving scales also results in a unique regime and complicates the situation. The implication of the results on measurement is also discussed. The theory may shed light on the study of other nonequilibrium systems and even nonlinear science.