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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2025 Volume 121, Issue 6, Pages 513–518 (Mi jetpl7475)

MISCELLANEOUS

On the universal properties of stochastic processes under optimally tuned Poisson restart

S. A. Belanab

a Faculty of Physics, HSE University, 101000, Moscow, Russia
b Landau Institute for Theoretical Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow region, Russia

Abstract: Poisson restart assumes that a stochastic process is interrupted and starts again at random time moments. A number of studies have demonstrated that this strategy may minimize the expected completion time in some classes of random search tasks. What is more, it turned out that under optimally tuned restart rate, any stochastic process, regardless of its nature and statistical details, satisfies a number of universal relations for the statistical moments of completion time. In this paper, we describe several new universal properties of optimally restarted processes. Also we obtain a universal inequality for the quadratic statistical moments of completion time in the optimization problem where stochastic process has several possible completion scenarios.

Received: 08.11.2024
Revised: 29.01.2025
Accepted: 30.01.2025

DOI: 10.31857/S0370274X25030247


 English version:
Journal of Experimental and Theoretical Physics Letters, 2025, 121:6, 490–495


© Steklov Math. Inst. of RAS, 2026