• DOI:10.1088/1367-2630/ac7609
• Corpus ID: 235446909

Emergence of Sinai physics in the stochastic motion of passive and active particles

@article{Shapira2022EmergenceOS,
  title={Emergence of Sinai physics in the stochastic motion of passive and active particles},
  author={Dekel Shapira and Doron Cohen},
  journal={New Journal of Physics},
  year={2022},
  volume={24}
}

• Dekel Shapira, D. Cohen
• Published 16 June 2021
• Physics
• New Journal of Physics

A particle that is immersed in a uniform temperature bath performs Brownian diffusion, as discussed by Einstein. But Sinai has realized that in a ‘random environment’ the diffusion is suppressed. Follow-up works have pointed out that in the presence of bias f there are delocalization and sliding transitions, with threshold value f c that depends on the disorder strength. We discuss in a critical way the emergence of Sinai physics for both passive and active Brownian particles. Tight-binding and Fokker–Planck versions of the model are addressed on equal footing. We assume that the transition rates between sites are enhanced either due to a driving mechanism or due to self-propulsion mechanism that are induced by an irradiation source. Consequently, counter intuitively, the dynamics becomes sub-diffusive and the relaxation modes become over-damped. For a finite system, spontaneous delocalization may arise, due to residual bias that is induced by the irradiation.