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A situation in which the dynamics has a symmetry but the chosen vacuum state does not, producing order parameters and, for global continuous symmetries, Goldstone modes.
wp-physics-spontaneous_symmetry_breakingnlab-physics-spontaneous_symmetry_breakingtong-qfttong-gaugeEach relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
QFT can have vacua that do not preserve all symmetries of the action.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
wp-physics-spontaneous_symmetry_breakingnlab-physics-spontaneous_symmetry_breakingwp-physics-quantum_field_theorynlab-physics-quantum_field_theoryEach relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
For spontaneous breaking of a continuous global symmetry under the theorem’s assumptions, Goldstone’s theorem requires gapless modes.
Record a genuine theorem implication that is not part of the target definition; these edges may point toward a weaker structure.
wp-physics-goldstone_theoremnlab-physics-nambu_goldstone_mode