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arXiv · 2306.05305

A Stochastic Analysis Approach to Tensor Field Theories

Ajay Chandra·Léonard Ferdinand
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Abstract

We present two different arguments using stochastic analysis to construct super-renormalizable tensor field theories, namely the $\mathrm{T}^4_3$ and $\mathrm{T}^4_4$ models. The first approach is the construction of a Langevin dynamic combined with a PDE energy estimate while the second is an application of the variational approach of Barashkov and Gubinelli. By leveraging the melonic structure of divergences, regularising properties of non-local products, and controlling certain random operators, we demonstrate that for tensor field theories these arguments can be significantly simplified in comparison to what is required for $\Phi^4_d$ models.

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Ajay Chandra, Léonard Ferdinand. 2023-06-08. A Stochastic Analysis Approach to Tensor Field Theories. https://arxiv.org/abs/2306.05305

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