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Domain of attraction of the quasi-stationary distributions for the Ornstein-Uhlenbeck process
Manuel Lladser, Jaime San Martin · 2006-06-16 · via math.ST updates on arXiv.org

Let $X=(X_t)$ be a one-dimensional Ornstein-Uhlenbeck process with an initial density function $f$ supported on the positive real-line that is a regularly varying function with exponent $-(1+η)$, with $η\in (0,1)$. We prove the existence of a probability measure $ν$ with a Lebesgue density, depending on $η$, such that for every Borel set $A$ of the positive real-line: $\lim_{t\to\infty} P_f(X_t\in A | T_0^X>t)=ν(A)$, where $T_0^X$ is the hitting time of 0 of $X$.

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