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Universal Kardar-Parisi-Zhang transient diffusion in nonequilibrium anharmonic chains

Yi Ming1, Hao Hu1, Hui-Min Li2

  • 1School of Physics and Optoelectronics Engineering, Anhui University, Hefei, Anhui 230601, China.

Physical Review. E
|February 17, 2023
PubMed
Summary

Nonlinear fluctuating hydrodynamics theory typically classifies anharmonic chains into Kardar-Parisi-Zhang (KPZ) or Gaussian classes. This study reveals that nonequilibrium transient diffusion in these chains exclusively follows the KPZ class, driven by soliton dynamics.

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