A tamed Euler scheme for SDEs with non-locally integrable drift coefficient

Tim Johnston and Sotirios Sabanis

Stochastic Processes and their Applications, 2026, vol. 191, issue C

Abstract: In this article we show that for SDEs with a drift coefficient that is non-locally integrable, one may define a tamed Euler scheme that converges in Lp at rate 1/2 to the true solution. The taming is required in this case since one cannot expect the regular Euler scheme to have finite moments in Lp. Our proof strategy involves controlling the inverse moments of the distance of scheme and the true solution to the singularity set. We additionally show that our setting applies to the case of two scalar valued particles with singular interaction kernel. To the best of the authors’ knowledge, this is the first work to prove strong convergence of an Euler-type scheme in the case of non-locally integrable drift.

Keywords: SDEs with non-locally integrable drift; Euler scheme; Singular interacting particles (search for similar items in EconPapers)
Date: 2026
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DOI: 10.1016/j.spa.2025.104772

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