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Why Gauge?

ROVELLI, Carlo (2013) Why Gauge? [Preprint]

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Abstract

The world appears to be well described by gauge theories; why? I suggest that gauge is more than mathematical redundancy. Gauge variables describe handles though which systems couple. Gauge-dependent quantities can not be predicted, but there is a sense in which they can be measured. This observation leads to a physical interpretation for the ubiquity of gauge: it is a consequence of a relational structure of the physical quantities.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
ROVELLI, Carlorovelli@cpt.univ-mrs.fr
Keywords: Gauge. Symmetry.
Subjects: General Issues > Structure of Theories
Specific Sciences > Physics > Symmetries/Invariances
Depositing User: Carlo ROVELLI
Date Deposited: 26 Aug 2013 15:14
Last Modified: 15 Nov 2013 13:50
Item ID: 9949
Subjects: General Issues > Structure of Theories
Specific Sciences > Physics > Symmetries/Invariances
Date: 26 August 2013
URI: http://philsci-archive.pitt.edu/id/eprint/9949

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