Year: 2026
Type: preprint
Abstract: We extend the paracontrolled distribution approach of Gubinelli, Imkeller, and Perkowski to singular stochastic heat equations with Caputo fractional time derivatives. By establishing Schauder estimates for the time-fractional heat flow and controlling history terms, we address the difficulties arising from temporal memory and the lack of the semigroup property. For the one-dimensional rough Burgers-type equation driven by space-time white noise with spatial dissipation \((-Δ)^σ\), we prove global well-posedness for \(σ\in(5/6,1]\) and \(ν\in(6σ/(12σ-5),1]\). For the heat equation with nonlinear multiplicative spatial white noise on the two-dimensional torus, we establish local well-posedness of renormalized solutions and an \(L^\infty\) blow-up criterion for every \(ν\in(0,1]\).
Source: arXiv (Cornell University)
Authors: Zhang, Shuolin, Yin, \quad Zhaoyang
Institution: Sun Yat-sen University
Language: English
Subfield: Mathematical Physics
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7222954462