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Isospin

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Summary

An approximate SU(2)SU(2) flavor symmetry treating up and down quarks, and correspondingly proton and neutron, as multiplet components when electromagnetic effects and the up–down mass difference are neglected.

Record metadata

Concept sources

Incoming relations (arrows to this concept)

Each relation below ends at this concept.

NucleonIsospin

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Proton and neutron form an approximate isospin doublet when electromagnetic effects and the up–down mass difference are neglected.

How to interpret this relation type

The target represents a state, property, observable, or state-dependent description associated with the source system or theory.

Relation sources

  • Wikipedia — Isospin — Isospin · encyclopedic reference · source ID wp-physics-isospin
  • nLab — Isospin — Isospin · mathematical physics reference · source ID nlab-physics-isospin

Physical symmetryIsospin

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Isospin is an approximate internal SU(2)SU(2) flavor symmetry.

How to interpret this relation type

The target is a member or subtype of the broader source class.

Relation sources

  • Wikipedia — Isospin — Isospin · encyclopedic reference · source ID wp-physics-isospin
  • nLab — Isospin — Isospin · mathematical physics reference · source ID nlab-physics-isospin

PionIsospin

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

The charged and neutral pions form an approximate isospin triplet.

How to interpret this relation type

The target represents a state, property, observable, or state-dependent description associated with the source system or theory.

Relation sources

  • Wikipedia — Isospin — Isospin · encyclopedic reference · source ID wp-physics-isospin
  • nLab — Isospin — Isospin · mathematical physics reference · source ID nlab-physics-isospin

Outgoing relations (arrows from this concept)

Each relation below starts at this concept.

IsospinNuclear force

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Approximate isospin symmetry organizes nuclear forces and spectra, with breaking from electromagnetism and quark-mass differences.

How to interpret this relation type

A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.

Relation sources