Bosonic field equations from an exact uncertainty principle

TL;DR

This paper introduces an exact uncertainty principle that derives quantum bosonic field equations from a classical ensemble framework, providing a new interpretation and a unique operator ordering for quantum gravity equations.

Contribution

It presents a novel Hamiltonian formalism linking classical ensembles and quantum bosonic fields through a specific uncertainty-based modification.

Findings

Derives quantum field equations from classical ensembles using an uncertainty principle.

Provides a unique operator ordering for quantum gravity equations.

Applies the formalism to electromagnetic and gravitational fields.

Abstract

A Hamiltonian formalism is used to describe ensembles of fields in terms of two canonically conjugate functionals (one being the field probability density). The postulate that a classical ensemble is subject to nonclassical fluctuations of the field momentum density, of a strength determined solely by the field uncertainty, is shown to lead to a unique modification of the ensemble Hamiltonian. The modified equations of motion are equivalent to the quantum equations for a bosonic field, and thus this exact uncertainty principle provides a new approach to deriving and interpreting the properties of quantum ensembles. The examples of electromagnetic and gravitational fields are discussed. In the latter case the exact uncertainty approach specifies a unique operator ordering for the Wheeler-DeWitt and Ashtekar-Wheeler-DeWitt equations.