# No-Go Theorems and the Foundations of Quantum Physics

## TL;DR

This paper critically examines the foundational proofs of no-go theorems in quantum physics, addressing methodological concerns and clarifying the validity of key results like Gisin's theorem.

## Contribution

It reinforces the methodological critique of certain no-go theorems and clarifies the applicability of Laudisa's concerns, especially regarding Gisin's theorem.

## Key findings

- Reinforces Laudisa's methodological critique of some no-go theorems.
- Critically discusses Malament's theorem in quantum field theory.
- Shows Gisin's theorem remains valid despite methodological concerns.

## Abstract

In the history of quantum physics several no-go theorems have been proved, and many of them have played a central role in the development of the theory, such as Bell's or the Kochen-Specker theorem. A recent paper by F. Laudisa has raised reasonable doubts concerning the strategy followed in proving some of these results, since they rely on the standard framework of quantum mechanics, a theory that presents several ontological problems. The aim of this paper is twofold: on the one hand, I intend to reinforce Laudisa's methodological point by critically discussing Malament's theorem in the context of the philosophical foundation of Quantum Field Theory; secondly, I rehabilitate Gisin's theorem showing that Laudisa's concerns do not apply to it.