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Escape rate of a dimer under the influence of additive colored noise: Ornstein–Uhlenbeck process

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  • Lyngdoh, Esha
  • Reenbohn, W.L.

Abstract

The escape process of a dimer is studied in a bistable potential in the presence of additive Ornstein-Uhlenbeck (OU) noise. The escape rate of the dimer shows a non-monotonic dependence with respect to the harmonic spring constant, κ. However, an increase in the correlation time, τ of the OU noise causes a delay in the escape mechanism of the dimer. Another important observation is that the optimal spring constant, kopt, at which the escape rate peaks changes with the correlation time. In summary, a complex interplay between the harmonic force and the correlation time of the OU noise is involved in the escape process of the dimer.

Suggested Citation

  • Lyngdoh, Esha & Reenbohn, W.L., 2024. "Escape rate of a dimer under the influence of additive colored noise: Ornstein–Uhlenbeck process," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 651(C).
    • Handle: RePEc:eee:phsmap:v:651:y:2024:i:c:s0378437124004849
    DOI: 10.1016/j.physa.2024.129975
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    References listed on IDEAS

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    1. Wang, Bing & Yin, Zhixiang, 2013. "Effects of colored noise and noise delay on a calcium oscillation system," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 392(19), pages 4203-4209.
    2. Mei, Ruoxing & Xu, Yong & Li, Yongge & Kurths, Jürgen, 2020. "The steady current analysis in a periodic channel driven by correlated noises," Chaos, Solitons & Fractals, Elsevier, vol. 135(C).
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