To Quantize or Not to Quantize: Fact and Folklore in Quantum Gravity

Citation data:

Philosophy of Science, ISSN: 0031-8248, Vol: 72, Issue: 5, Page: 777-788

Publication Year:
Usage 137
Abstract Views 98
Full Text Views 39
Captures 21
Readers 17
Exports-Saves 4
Social Media 1
Tweets 1
Citations 15
Citation Indexes 15
Repository URL:
Wuthrich, Christian
University of Chicago Press
Arts and Humanities
article description
Does the need to find a quantum theory of gravity imply that the gravitational field must be quantized? Physicists working in quantum gravity routinely assume an affirmative answer, often without being aware of the metaphysical commitments that tend to underlie this assumption. The ambition of this article is to probe these commitments and to analyze some recently adduced physical - as opposed to metaphysical - arguments pertinent to the issue of quantization. While there exist good reasons to quantize gravity, as this analysis will show, alternative approaches to gravity challenge the received wisdom. These renegade approaches do not regard gravity as a fundamental force, but rather as effective, i.e., as merely supervening on fundamental physics. I will urge that these alternative accounts at least prove the tenability of an opposition to quantization. Copyright 2005 by the Philosophy of Science Association. All rights reserved.