Persistence of fractional Brownian motion with moving boundaries and applications
Persistence of fractional Brownian motion with moving boundaries and applications
复制标题
具有移动边界的分数布朗运动的持久性和应用
DOI:
10.1088/1751-8113/46/12/125007
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
C. Baumgarten
中科院分区:
文献类型:
--
作者:
F. Aurzada;C. Baumgarten
We consider various problems related to the persistence probability of fractional Brownian motion (FBM), which is the probability that the FBM X stays below a certain level until time T. Recently, Oshanin et al (2012, arXiv: 1209.3313 v2) have studied a physical model, where persistence properties of FBM are shown to be related to scaling properties of a quantity J N, called the steady-state current. It turns out that for this analysis, it is important to determine persistence probabilities of FBM with a moving boundary. We show that one can add a boundary of logarithmic order to an FBM without changing the polynomial rate of decay of the corresponding persistence probability, which proves a result needed in Oshanin et al (2013 Phys. Rev. Lett. at press (arXiv: 1209.3313 v2)). Moreover, we complement their findings by considering the continuous-time version of J T. Finally, we use the results for moving boundaries in order to improve estimates by Molchan (1999 Commun. Math. Phys. 205 97–111) concerning the persistence properties of other quantities of interest, such as the time when an FBM reaches its maximum on the time interval (0, 1) or the last zero in the interval (0, 1).
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影响因子:
8.6
作者:
G. Oshanin;A. Rosso;G. Schehr
通讯作者:
G. Schehr
DOI:
10.1214/11-aihp427
发表时间:
2010-08
期刊:
arXiv: Probability
影响因子:
--
作者:
F. Aurzada;S. Dereich
通讯作者:
F. Aurzada;S. Dereich
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
F. Castell;N. Guillotin;F. Pène;Bruno Schapira
通讯作者:
Bruno Schapira
DOI:
--
发表时间:
1980
期刊:
影响因子:
--
作者:
K. Uchiyama
通讯作者:
K. Uchiyama
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
F. Aurzada
通讯作者:
F. Aurzada