Spin tensor and pseudo-gauges: from nuclear collisions to gravitational physics

• Published in: The European physical journal. A, Hadrons and nuclei Vol. 57; no. 5
• Main Authors: Speranza, Enrico, Weickgenannt, Nora
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2021; Springer Nature B.V
• Subjects: Angular momentum; Atomic collisions; Computational fluid dynamics; Decomposition; Fluid flow; Gauges; Hadrons; Heavy Ions; Hydrodynamics; Kinetic theory; Mathematical analysis; Nuclear Fusion; Nuclear Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Relativistic effects; Relativity; Review; Tensors; Theory of Hot Matter and Relativistic Heavy-Ion Collisions (THOR)

The relativistic treatment of spin is a fundamental subject which has an old history. In various physical contexts it is necessary to separate the relativistic total angular momentum into an orbital and spin contribution. However, such decomposition is affected by ambiguities since one can always re...