Parameter Diagrams of the GRW and CSL Theories of Wave Function Collapse

TL;DR

This paper visualizes the parameter space of the GRW and CSL wave function collapse theories, highlighting regions that are empirically refuted or philosophically unsatisfactory, to better understand their viability.

Contribution

It provides a diagram of the collapse parameter space, clarifying which regions are supported or challenged by empirical data and philosophical considerations.

Findings

Identifies empirically refuted regions of the parameter space.

Highlights philosophically unsatisfactory regions.

Provides a visual tool for analyzing collapse theories.

Abstract

It has been hypothesized that the time evolution of wave functions might include collapses, rather than being governed by the Schroedinger equation. The leading models of such an evolution, GRW and CSL, both have two parameters (or new constants of nature), the collapse width sigma and the collapse rate lambda. We draw a diagram of the sigma-lambda-plane showing the region that is empirically refuted and the region that is philosophically unsatisfactory.