A universality result for the critical 2d stochastic heat flow
Hindy Drillick, Jonathan Hou, Shalin Parekh
Source abstract
For a large class of discrete- and continuous-time models satisfying a linear flow property, we prove convergence to the critical stochastic heat flow under diffusive scaling of space and time. Convergence is in the sense of finite-dimensional distributions in the space of measure-valued stochastic flows. The class of discrete models we consider includes random walks in space-time random environments with finite-range jumps, and directed polymer models with finite-range spatial correlations. The class of continuum models we consider includes several distinct types of linear-multiplicative stochastic PDEs whose driving noise is Gaussian with a smooth and compactly supported covariance kernel.
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