# Reality facing quantum mechanics

## TL;DR

This paper examines how various interpretations of quantum mechanics, including Copenhagen, von Neumann, Bohm, and Everett, alter classical notions of reality, highlighting their differing impacts on the concept of locality.

## Contribution

It provides a comparative analysis of major quantum interpretations and their implications for the classical concept of reality.

## Key findings

- Different interpretations modify the classical notion of reality in unique ways.
- The local character of classical reality is challenged by quantum interpretations.
- The paper clarifies how each interpretation affects the concept of locality.

## Abstract

All investigators working on the foundations of quantum mechanics agree that the theory has profoundly modified our conception of reality. But there ends the consensus. The unproblematic formalism of the theory gives rise to a number of very different interpretations, each of which has consequences on the notion of reality. This paper analyses how the Copenhagen interpretation, von Neumann's state vector collapse, Bohm and de Broglie's pilot wave and Everett's many worlds modify, each in its own way, the classical conception of reality, whose local character, in particular, requires revision.