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Why surplus structure is not superfluous

Nguyen, James and Teh, Nicholas J. and Wells, Laura (2017) Why surplus structure is not superfluous. British Journal for the Philosophy of Science. ISSN 0007-0882 (In Press)

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Abstract

The idea that gauge theory has `surplus' structure poses a puzzle: in one much discussed sense, this structure is redundant; but on the other hand, it is also widely held to play an essential role in the theory. In this paper, we employ category-theoretic tools to illuminate an aspect of this puzzle. We precisify what is meant by `surplus' structure by means of functorial comparisons with equivalence classes of gauge fields, and then show that such structure is essential for any theory that represents a rich collection of physically relevant fields which are `local' in nature.

Item Type: Article
Official URL: http://journal.philsci.org/
Additional Information: © 2017 The Authors
Subjects: B Philosophy. Psychology. Religion > B Philosophy (General)
Sets: Departments > Philosophy, Logic and Scientific Method
Date Deposited: 15 Dec 2017 14:19
Last Modified: 15 Dec 2017 14:19
URI: http://eprints.lse.ac.uk/id/eprint/86346

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