General Asymptotics of Wiener Functionals and Application to Mathematical Finance
General Asymptotics of Wiener Functionals and Application to Mathematical Finance
复制标题
维纳泛函的一般渐近性及其在数学金融中的应用
DOI:
10.2139/ssrn.1019587
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发表时间:
2007
期刊:
影响因子:
--
通讯作者:
Yasufumi Osajima
中科院分区:
文献类型:
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作者:
Yasufumi Osajima
In the present paper, we give an asymptotic expansion of probability density for a component of general diffusion models. Our approach is based on infinite dimensional analysis on the Malliavin calculus and Kusuoka-Stroock's asymptotic expansion theory for general Wiener functionals. The initial term of the expansion is given by the 'energy of path' and we calculate the energy by solving Hamilton equation. We apply our approach to the problems of mathematical finance. In particular, we obtain general asymptotic expansion formulae of implied volatilities for general diffusion models, e.g. CEV model, displaced diffusion and SABR model.