The quantum mechanics of experiments

TL;DR

This paper discusses the measurement problem in quantum mechanics, highlighting the role of dissipation and stochastic evolution, and proposes a solution within a double-slit experiment model.

Contribution

It offers a novel perspective on the measurement problem by linking dissipation to stochastic state evolution and provides an idealized model solution.

Findings

Dissipation corresponds to stochastic evolution of individual states.

Dissipation is crucial for measurement completion.

A model solution to the measurement problem is proposed.

Abstract

This note starts with a recapitulation of what people call the ``Measurement Problem'' of Quantum Mechanics (QM). The dissipative nature of the quantum-mechanical time-evolution of averages of states over large ensembles of identical isolated systems consisting of matter interacting with the radiation field is discussed and shown to correspond to a stochastic time-evolution of states of individual systems. The importance of dissipation for the successful completion of measurements is highlighted. To conclude, a solution of the ``Measurement Problem'' is sketched in an idealized model of a double-slit experiment.