Li-Cheng Tsai (Rutgers U.)
3:00 PM - 4:00 PM
We study the stochastic heat equation in two spatial dimensions with a multiplicative white noise that is mollified in space and white in time. As the mollification radius varepsilon –> 0, we tune the coupling constant near the critical point, and show that the single time correlation functions converge to a limit written in terms of an explicit non-trivial semigroup. Our approach consists of two steps. First we show the convergence of the resolvent of the (tuned) two-dimensional delta Bose gas, by adapting the framework of Dimock and Rajeev (2004) to our setup of spatial mollification. Then we match this to the Laplace transform of our semigroup.
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