The argument for an objective wave function collapse: Why spontaneous localization collapse or no-collapse decoherence cannot solve the measurement problem in a subjective fashion

TL;DR

This paper argues that wave function collapse occurs objectively, specifically in the retina, and criticizes subjective collapse theories, suggesting that an objective collapse is essential for resolving the measurement problem and potentially for quantum gravity.

Contribution

It provides a detailed analysis supporting objective wave function collapse in the retina and challenges subjective collapse models, impacting interpretations of quantum measurement and gravity quantization.

Findings

Collapse occurs in the retina's rhodopsin molecule

Subjective collapse theories are less plausible

Objective collapse is necessary for the measurement problem

Abstract

A more detailed analysis of the measurement problem continues to support the position taken by Shimony and the author that collapse of the wave function takes place in an objective manner in the rhodopsin molecule of the retina. This casts further doubts on the theories involving a spontaneous localization collapse process or a no-collapse decoherence process taking place in the visual cortex in a subjective fashion. The possibility is then raised, as per Anandan, as to whether the solution of the measurement problem in quantum theory allows one to address the problem of quantizing gravitation.