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To reset, or not to reset!


Event description

Stochastic resetting [1] can either accelerate or delay a dynamical process that takes a random time to complete (i.e., a first-passage process). Tuning the physical governing parameters can invert such effect of resetting on the mean completion time of the process, leading to a resetting transition. In this talk, I shall first explore the exact conditions where stochastic resetting accelerates diffusive transport for a couple of analytically tractable systems [2-3]. Based on the common features that these model systems show, a general framework can be proposed that reveals that when thermal energy dominates the dynamics (or when the process is diffusion-controlled) resetting can, in principle, expedite it [4]. This trend holds even beyond homogeneous diffusion [5-6]. Finally, I shall explain how stochastic resetting can be implemented as a useful strategy to enhance the rate of a gated diffusive transport without compromising on its selectivity [7].


[1] M. R. Evans, S. N. Majumdar, and G. Schehr, J. Phys. A: Math. Theor. 53, 193001 (2020).

[2] S. Ray, D. Mondal and S. Reuveni, J. Phys. A: Math. Theor. 52, 255002 (2019).

[3] S. Ray and S. Reuveni, J. Chem. Phys. 152, 234110, (2020).

[4] S. Ray and S. Reuveni, J. Chem. Phys. (Comm.) 154, 171103, (2021).

[5] S. Ray, J. Chem. Phys. 153, 234904, (2020).

[6] S. Ray, Phys. Rev. E 106, 034133, (2022).

[7] A. Biswas, A. Pal, D. Mondal, and S. Ray, J. Chem. Phys. accepted, (2023) [available at arXiv:2304.10605].

To reset, or not to reset!


Higgs Centre Seminar Room, JCMB (Find us on campus maps)
The Higgs Centre for Theoretical Physics
School of Physics and Astronomy
James Clerk Maxwell Building, 4305
Peter Guthrie Tait Road

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