论文标题

$φ^4_3 $通过Girsanov的定理测量

The $Φ^4_3$ measure via Girsanov's theorem

论文作者

Barashkov, Nikolay, Gubinelli, Massimiliano

论文摘要

我们在周期性的三维框上构建$φ^4_3 $测量,作为Gaussian自由场随机移动的绝对连续扰动。移位度量是通过Girsanov定理构建的,相关的过滤是刻度参数生成的过滤。作为副产品,我们给出了一个独立的证据,证明$φ^4_3 $度量为单数WRT。高斯免费场。

We construct the $Φ^4_3$ measure on a periodic three dimensional box as an absolutely continuous perturbation of a random shift of the Gaussian free field. The shifted measure is constructed via Girsanov's theorem and the relevant filtration is the one generated by a scale parameter. As a byproduct we give a self-contained proof that the $Φ^4_3$ measure is singular wrt. the Gaussian free field.

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