%0 Journal Article %T Some Diffusion Processes Associated With Two Parameter Poisson-Dirichlet Distribution and Dirichlet Process %A Shui Feng %A Wei Sun %J Mathematics %D 2009 %I arXiv %X The two parameter Poisson-Dirichlet distribution $PD(\alpha,\theta)$ is the distribution of an infinite dimensional random discrete probability. It is a generalization of Kingman's Poisson-Dirichlet distribution. The two parameter Dirichlet process $\Pi_{\alpha,\theta,\nu_0}$ is the law of a pure atomic random measure with masses following the two parameter Poisson-Dirichlet distribution. In this article we focus on the construction and the properties of the infinite dimensional symmetric diffusion processes with respective symmetric measures $PD(\alpha,\theta)$ and $\Pi_{\alpha,\theta,\nu_0}$. The methods used come from the theory of Dirichlet forms. %U http://arxiv.org/abs/0903.0623v2