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The operator mapping asymptotic in-states to out-states when such asymptotic particle states exist.
wp-physics-s_matrixnlab-physics-s_matrixtong-qftEach relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
QFT defines an -matrix when asymptotic particle states and suitable long-time limits exist.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
wp-physics-s_matrixnlab-physics-s_matrixwp-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.
Scattering amplitudes are matrix elements of the -matrix after removing normalization and conservation factors.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
wp-physics-scattering_amplitudenlab-physics-scattering_amplitudewp-physics-s_matrixnlab-physics-s_matrix