Connecting the dots: Mott for emulsions, collapse models, colored noise, frame dependence of measurements, evasion of the "Free Will Theorem"

TL;DR

This paper reviews how objective reduction models with colored, frame-dependent noise can explain measurement collapse, showing that relativistic models are incompatible with experiments and that non-relativistic CSL models evade the Free Will Theorem.

Contribution

It demonstrates that colored noise in objective reduction models must be non-relativistic, providing insights into measurement collapse and evading the Free Will Theorem.

Findings

Colored noise must be non-white and frame dependent.

Relativistic objective reduction models are incompatible with experimental bounds.

Non-relativistic CSL model evades the Free Will Theorem.

Abstract

We review the argument that latent image formation is a measurement in which the state vector collapses, requiring an enhanced noise parameter in objective reduction models. Tentative observation of a residual noise at this level, plus several experimental bounds, imply that the noise must be colored (i.e., non-white), and hence frame dependent and non-relativistic. Thus a relativistic objective reduction model, even if achievable in principle, would be incompatible with experiment, the best one can do is the non-relativistic CSL model. This negative conclusion has a positive aspect, in that the non-relativistic CSL reduction model evades the argument leading to the Conway--Kochen "Free Will Theorem".