Modal Interpretations and Relativity

TL;DR

This paper proves that it is impossible for modal interpretations of quantum mechanics, including Bub's, to be fully Lorentz invariant at a fundamental level, highlighting limitations in reconciling modal interpretations with relativity.

Contribution

It provides a more general proof of the incompatibility between modal interpretations and Lorentz invariance, extending previous no-go theorems.

Findings

Modal interpretations cannot exhibit 'serious' Lorentz invariance at the fundamental level.

The proof applies to a broader class of modal interpretations than previously shown.

Particular focus on Bub's modal interpretation and its limitations.

Abstract

A proof is given, at a greater level of generality than previous 'no-go' theorems, of the impossibility of formulating a modal interpretation that exhibits 'serious' Lorentz invariance at the fundamental level. Particular attention is given to modal interpretations of the type proposed by Bub.