Higher categories of push-pull spans, II: Matrix factorizations

Abstract

This is the second part of a project aimed at formalizing Rozansky-Witten models in the functorial field theory framework. In the first part we constructed a symmetric monoidal $(\infty ,3)$-category $\mathcal{CRW}$ of commutative Rozansky-Witten models with the goal of approximating the $3$-category of Kapustin and Rozansky. In this paper we extend work of Brunner, Carqueville, Fragkos, and Roggenkamp on the affine Rozansky-Witten models: we exhibit a functor connecting their $2$-category of matrix factorizations with the homotopy $2$-category of $\mathcal{CRW}$, and calculate the associated TFTs.

Comments welcome! Edit #1: Last version. Corrected typos, minor mistakes, and added more info in Section 2.4 following referee report