Tails of exit times from unstable equilibria on the line

Yuri Bakhtin; Zsolt Pajor-Gyulai

Tails of exit times from unstable equilibria on the line

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arxiv 1810.05341 v2 pith:LVU775RH submitted 2018-10-12 math.PR math.DS

Yuri Bakhtin , Zsolt Pajor-Gyulai This is my paper · ORCID

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keywords exitnoiseunstableassociatedasymptoticsatypicallycalculusconditioned

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For a one-dimensional smooth vector field in a neighborhood of an unstable equilibrium, we consider the associated dynamics perturbed by small noise. We give a revealing elementary proof of a result proved earlier using heavy machinery from Malliavin calculus. In particular, we obtain precise vanishing noise asymptotics for the tail of the exit time and for the exit distribution conditioned on atypically long exits.

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