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Loop quantum ontology: spin-networks and spacetime

Norton, Joshua (2015) Loop quantum ontology: spin-networks and spacetime. [Preprint]

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Abstract

The ontological issues at stake given the theory of loop quantum gravity (LQG) include the status of spacetime, the nature and reality of spin-networks, the relationship of classical spacetime to issues of causation and the status of the abstract-concrete distinction. I this paper I argue that, while spacetime seems to disappear, the spirit of substantival spacetime lives on under certain interpretations of the theory. Moreover, in order for there to be physical spin-networks, and not merely mathematical artifacts, I argue that we must interpret the theory as including a substantival background manifold. This latter result is important for any project which interprets spacetime as an emergent structure from physical spin-networks.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
Norton, Joshuajoshua.d.norton@gmail.com
Additional Information: This document was originally written as a portion of the dissertation of Joshua Norton from the University if Illinois at Chicago.
Keywords: loop quantum gravity, spin-networks, emergence, general relativity, quantum gravity
Subjects: General Issues > History of Philosophy of Science
Specific Sciences > Physics
Depositing User: Mr Joshua Norton
Date Deposited: 03 Apr 2016 18:42
Last Modified: 03 Apr 2016 18:42
Item ID: 12016
Subjects: General Issues > History of Philosophy of Science
Specific Sciences > Physics
Date: July 2015
URI: http://philsci-archive.pitt.edu/id/eprint/12016

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