The physical meaning of the Belinfante-Rosenfeld ambiguity
The physical meaning of the Belinfante-Rosenfeld ambiguity
Current literature lacks consensus on how to theoretically describe spin polarization and its transport in matter. The underlying reason is the presence of the Belinfante-Rosenfeld (BR) ambiguity in the form of the energy-momentum and spin tensors. I re-examine the BR ambiguity in Einstein-Cartan spacetimes, using the bi-form formalism in a manner applicable to any conserved current and its corresponding gauge field. This allows us to physically interpret the BR ambiguity as the choice of splitting a conserved current into its matter and gauge field contributions.
Matthaiakakis, Ioannis
f5950277-7869-4bbd-b907-8319540424ab
Matthaiakakis, Ioannis
f5950277-7869-4bbd-b907-8319540424ab
[Unknown type: UNSPECIFIED]
Abstract
Current literature lacks consensus on how to theoretically describe spin polarization and its transport in matter. The underlying reason is the presence of the Belinfante-Rosenfeld (BR) ambiguity in the form of the energy-momentum and spin tensors. I re-examine the BR ambiguity in Einstein-Cartan spacetimes, using the bi-form formalism in a manner applicable to any conserved current and its corresponding gauge field. This allows us to physically interpret the BR ambiguity as the choice of splitting a conserved current into its matter and gauge field contributions.
This record has no associated files available for download.
More information
Submitted date: 25 March 2026
Identifiers
Local EPrints ID: 511608
URI: http://eprints.soton.ac.uk/id/eprint/511608
PURE UUID: 9e8ca2be-199b-4a3b-959a-49a9cc445d33
Catalogue record
Date deposited: 22 May 2026 18:26
Last modified: 23 May 2026 02:34
Export record
Altmetrics
Contributors
Author:
Ioannis Matthaiakakis
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics