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Sophistry about symmetries?

Abstract:
A common adage runs that, given a theory manifesting symmetries, the syntax of that theory should be modified in order to construct a new theory, from which symmetry-variant structure of the original theory has been excised. Call this strategy for explicating the underlying ontology of symmetry-related models reduction. Recently, Dewar has proposed an alternative to reduction as a means of articulating the ontology of symmetry-related models—what he calls (external) sophistication, in which the semantics of the original theory is modified, and symmetry-related models of that theory are treated as if they are isomorphic. In this paper, we undertake a critical evaluation of sophistication about symmetries—we find the programme underdeveloped in a number of regards. In addition, we clarify the interplay between sophistication about symmetries, and a separate debate to which Dewar has contributed—viz., that between interpretational versus motivational approaches to symmetry transformations.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1007/s11229-020-02658-4

Authors


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Institution:
University of Oxford
Division:
HUMS
Department:
Philosophy Faculty
Role:
Author


Publisher:
Springer
Journal:
Synthese More from this journal
Volume:
199
Pages:
315-344
Publication date:
2021-05-15
Acceptance date:
2020-04-08
DOI:
EISSN:
1573-0964
ISSN:
0039-7857


Language:
English
Keywords:
Pubs id:
1099071
Local pid:
pubs:1099071
Deposit date:
2020-04-08

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