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Gauge Is More Than Mathematical Redundancy

ROVELLI, Carlo (2020) Gauge Is More Than Mathematical Redundancy. [Preprint]

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Abstract

Physical systems may couple to other systems through variables that are not gauge invariant. When we split a gauge system into two subsystems, the gauge-invariant variables of the two subsystems have less information than the gauge-invariant variables of the original system; the missing information regards degrees of freedom that express relations between the subsystems. All this shows that gauge invariance is a formalization of the relational nature of physical degrees of freedom. The recent developments on boundary variables and boundary charges are clarified by this observation.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
ROVELLI, Carlorovelli@cpt.univ-mrs.fr0000-0003-1724-9737
Keywords: Gauge
Subjects: General Issues > Determinism/Indeterminism
Specific Sciences > Physics > Fields and Particles
Specific Sciences > Physics > Relativity Theory
General Issues > Theory/Observation
Depositing User: Carlo ROVELLI
Date Deposited: 29 Sep 2020 13:12
Last Modified: 29 Sep 2020 13:12
Item ID: 18139
Subjects: General Issues > Determinism/Indeterminism
Specific Sciences > Physics > Fields and Particles
Specific Sciences > Physics > Relativity Theory
General Issues > Theory/Observation
Date: September 2020
URI: https://philsci-archive-dev.library.pitt.edu/id/eprint/18139

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