Introduction

Abstract

The many-body quantum problem is, in its different formulations, at the core of our understanding of nature and modern technologies [1]. On the one hand, it encompasses the modeling of the fundamental constituents of the universe [2] and quantum matter [3, 4]. On the other hand, the development of most future technology relies on our capability of describing and understanding many-body quantum systems: among others, the electronic structure problem with impact on chemistry and drugs research [5], the development of quantum technologies [6–8], and the engineering of new materials, e.g. more efficient light harvesting materials or displaying topological order [9–11].