Entropic Dynamics and Quantum "Measurement"

TL;DR

Entropic Dynamics offers a Bayesian, information-based framework for quantum measurement, distinguishing ontic positions from epistemic probabilities, and evading traditional no-go theorems by denying an ontic subquantum dynamics.

Contribution

This paper introduces Entropic Dynamics as a realist psi-epistemic model that addresses quantum measurement and bypasses no-go theorems through epistemic-only dynamics.

Findings

ED successfully separates ontic and epistemic elements.

ED evades no-go theorems by denying subquantum ontic dynamics.

ED provides a consistent Bayesian approach to quantum measurement.

Abstract

The entropic dynamics (ED) approach to quantum mechanics is ideally suited to address the problem of measurement because it is based on entropic and Bayesian methods of inference that have been designed to process information and data. The approach succeeds because ED achieves a clear-cut separation between ontic and epistemic elements: positions are ontic while probabilities and wave functions are epistemic. Thus, ED is a viable realist psi-epistemic model. Such models are widely assumed to be ruled out by various no-go theorems. We show that ED evades those theorems by adopting a purely epistemic dynamics and denying the existence of an ontic dynamics at the subquantum level.