Year: 2015
Type: preprint
Abstract: We construct a piecewise linear approximation for the dynamical $Φ_3^4$ model on $\mathbb{T}^3$ by the theory of regularity structures in [Hai14]. For the dynamical $Φ^4_3$ model it is proved in [Hai14] that a renormalisation has to be performed in order to define the nonlinear term. Compared to the results in [Hai14] we consider piecewise linear approximations to space-time white noise and prove that the solutions to the approximating equations converge to the solution to the dynamical $Φ^4_3$ model. The renormalisation in this case corresponds to adding the solution multiplied by a function depending on $t$ in the approximating equation.
Source: arXiv (Cornell University)
Authors: Zhu, Rongchan, Zhu, Xiangchan
Language: English
Subfield: Mathematical Physics
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
Awards: G7650315615, G8129939846
OpenAlex ID: W2787038294