Quantum fields as gravitational sources

TL;DR

This paper examines the issues of using quantum fields as sources in classical general relativity, identifies conceptual problems, and proposes alternative approaches based on Bohm's theory to better connect quantum theory with gravity.

Contribution

It introduces new perspectives on integrating quantum fields with classical gravity, highlighting conceptual issues and proposing Bohmian mechanics as an alternative framework.

Findings

Identifies conceptual problems in current quantum-to-gravity linking methods.

Proposes Bohm's theory as a viable alternative for quantum-gravity integration.

Highlights invalidity of some common equations in quantum gravity contexts.

Abstract

The practice of setting quantum fields as sources for classical general relativity is examined. Several conceptual problems are identified which invalidate apparently innocuous equations. Alternative ways to links classical general relativity with quantum theory using Bohm's theory are proposed.