Possible role of gravity in collapse of the wave-function: a brief survey of some ideas

TL;DR

This paper surveys various theoretical approaches exploring the potential influence of gravity on quantum wave-function collapse, including models involving decoherence, the Schrödinger-Newton equation, and black hole complementarity.

Contribution

It provides a concise overview of multiple gravity-related theories addressing wave-function collapse, highlighting their connections and differences.

Findings

Identifies key gravity-based collapse models

Summarizes connections between gravity and quantum measurement

Highlights open questions in gravity-related collapse theories

Abstract

This article is a brief survey of some approaches to implementing the suggestion that collapse of the wave function is mediated by gravity. These approaches include: a possible connection between the problem of time and problem of quantum measurement, decoherence models based on space-time uncertainty, the Schr\"{o}dinger-Newton equation, attempts to introduce gravity into collapse models such as CSL, ideas based on the black hole - elementary particle complementarity, and the possible role of a complex space-time metric.