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Stochastic resetting with refractory periods: pathway formulation and exact results
Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain.
Nordita SU; Department of Physics, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore-453552, India.ORCID iD: 0000-0002-1651-7499
Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain.
Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain.
2024 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 99, no 4, article id 045234Article in journal (Refereed) Published
Abstract [en]

We look into the problem of stochastic resetting with refractory periods. The model dynamics comprises diffusive and motionless phases. The diffusive phase ends at random time instants, at which the system is reset to a given position—where the system remains at rest for a random time interval, termed the refractory period. A pathway formulation is introduced to derive exact analytical results for the relevant observables in a broad framework, with the resetting time and the refractory period following arbitrary distributions. For the paradigmatic case of Poissonian distributions of the resetting and refractory times, in general with different characteristic rates, closed-form expressions are obtained that successfully describe the relaxation to the steady state. Finally, we focus on the single-target search problem, in which the survival probability and the mean first passage time to the target can be exactly computed. Therein, we also discuss optimal strategies, which show a non-trivial dependence on the refractory period.

Place, publisher, year, edition, pages
IOP Publishing , 2024. Vol. 99, no 4, article id 045234
Keywords [en]
first passage time, optimal search process, stochastic resetting
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-367030DOI: 10.1088/1402-4896/ad317bISI: 001187442500001Scopus ID: 2-s2.0-85188342299OAI: oai:DiVA.org:kth-367030DiVA, id: diva2:1983653
Note

QC 20250711

Available from: 2025-07-11 Created: 2025-07-11 Last updated: 2025-07-11Bibliographically approved

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