# Geometric phases, Everett's many-worlds interpretation of quantum mechanics, and wormholes

## TL;DR

This paper explores how geometric phases in adiabatic quantum dynamics can embody Everett's many-worlds interpretation, linking it to quantum gravity and wormholes, and addressing foundational issues like interference and decoherence.

## Contribution

It introduces a geometric realisation of the many-worlds interpretation using quantum geometric phases, connecting it to quantum gravity and wormholes.

## Key findings

- Geometric phases enable a physical realisation of many-worlds interpretation.
- The interpretation is consistent with quantum gravity and matrix models.
- Quantum wormholes are modeled as physical entities within this framework.

## Abstract

We present how the formalism of geometric phases in adiabatic quantum dynamics provides geometric realisations permitting to ``embody'' the Everett's many-worlds interpretation of quantum mechanics, including interferences between the worlds needed for the probability changes and the decoherence processes needed to solve the preferred basis problem. We show also that this geometric realisation is intimately related to quantum gravity (especially to matrix models), showing that the many-world interpretation can be consistent with quantum gravity. The concept of wormhole borrowed to general relativity is central in this geometric realisation. It appears not only as an image by analogy to help the interpretations, but also as a true physical model of quantum wormhole in quantum gravity, the two ones being consistent which each other.