Averaging dynamics driven by fractional Brownian motion
Averaging dynamics driven by fractional Brownian motion
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DOI:
10.1214/19-aop1408
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发表时间:
2019-02
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通讯作者:
Martin Hairer;Xue-Mei Li
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作者:
Martin Hairer;Xue-Mei Li
We consider slow / fast systems where the slow system is driven by fractional Brownian motion with Hurst parameter $H>{1\over 2}$. We show that unlike in the case $H={1\over 2}$, convergence to the averaged solution takes place in probability and the limiting process solves the 'naively' averaged equation. Our proof strongly relies on the recently obtained stochastic sewing lemma.