Do we finally understand Quantum Mechanics?

TL;DR

This paper reviews the current understanding of quantum mechanics, highlighting the progress made through quantum field theory and Bell's theorems, while acknowledging unresolved foundational mysteries.

Contribution

It critically examines the extent of our understanding of quantum mechanics and identifies key foundational questions that remain open.

Findings

Quantum field theory has shaped our intuitive picture of the microscopic world.

Bell's theorems support the nonlocal and probabilistic nature of quantum mechanics.

Several foundational aspects of quantum mechanics remain mysterious and unresolved.

Abstract

The ontology emerging from quantum field theory and the results following from Bell's theorems allowed the development of an intuitive picture of the microscopic world described by quantum mechanics, that is, we can say that we understand this theory. However there remain several aspects of it that are still mysterious and require more work on the foundations of quantum mechanics.