Journal of Evolution Equations ( IF 1.4 ) Pub Date : 2020-06-02 , DOI: 10.1007/s00028-020-00583-0 Masato Hoshino , Hiroshi Kawabi , Seiichiro Kusuoka
We consider a quantum field model with exponential interactions on the two-dimensional torus, which is called the \(\exp (\Phi )_{2}\)-quantum field model or Høegh-Krohn’s model. In the present paper, we study the stochastic quantization of this model by singular stochastic partial differential equations, which is recently developed. By the method, we construct a unique time-global solution and the invariant probability measure of the corresponding stochastic quantization equation and identify it with an infinite-dimensional diffusion process, which has been constructed by the Dirichlet form approach.
中文翻译:
与圆环上的时空白噪声驱动的$$ \ exp(\ Phi)_2 $$ exp(Φ)2-量子场模型相关的随机量化
我们考虑在二维圆环上具有指数相互作用的量子场模型,称为\(\ exp(\ Phi)_ {2} \)-量子场模型或Høegh-Krohn模型。在本文中,我们通过奇异随机偏微分方程研究了该模型的随机量化,这是最近开发的。通过该方法,我们构造了唯一的时全局解和相应的随机量化方程的不变概率测度,并通过狄利克雷特形式方法构造的无穷维扩散过程对其进行了识别。