Recurrence of horizontal–vertical walks
نویسندگان
چکیده
Consider a nearest neighbor random walk on the two-dimensional integer lattice, where each vertex is initially labeled either `H' or `V', uniformly and independently. At discrete time step, walker resamples label at its current location (changing to `V' with probability $q$). Then, it takes mean zero horizontal step if new `H', vertical `V'. This model randomized version of deterministic rotor walk, for which recurrence (i.e., visiting every infinitely often 1) in two dimensions still an open problem. We answer analogous question horizontal-vertical by showing that recurrent $q \in (\frac{1}{3},1]$.
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ژورنال
عنوان ژورنال: Annales de l'I.H.P
سال: 2023
ISSN: ['0246-0203', '1778-7017']
DOI: https://doi.org/10.1214/22-aihp1277