Non-homogeneous random walks with stochastic resetting: an application to the Gillis model

نویسندگان

چکیده

We consider the problem of first passage time to origin a spatially non-homogeneous random walk with position-dependent drift, known as Gillis walk, in presence resetting. The starts from an initial site $ x_0 and, fixed probability r $, at each step may be relocated given x_r $. From general perspective, we derive series results regarding and second moment hitting distribution, valid for wide class processes, including walks lacking property translational invariance; then apply these specific model. When resetting is not applied, by tuning value parameter which defines transition process, denoted \epsilon recurrence properties are changed, can observe: transient null-recurrent or positive-recurrent walk. mechanism switched on, study quantitatively all regimes improvement search efficiency. In particular, every case allows system reach target one on average, finite time. If reset-free regime, this makes always advantageous moreover, it assures existence optimal r^* minimizes mean Instead, when positive-recurrent, introduction necessarily beneficial. explain that there exists threshold r_{\mathrm{th}} above yields larger respect system. provide zero some values parameters, meaning that...

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ژورنال

عنوان ژورنال: Journal of Statistical Mechanics: Theory and Experiment

سال: 2022

ISSN: ['1742-5468']

DOI: https://doi.org/10.1088/1742-5468/aca587