unitarity
nounEtymology From unitary + -ity.
1
The quality or state of being unitary.
- In this section, we shall prove the gauge invariance and unitarity of the physical S-matrix in quantum electrodynamics, to all orders in the renormalized perturbation theory.1993, George Sterman, An Introduction to Quantum Field Theory, page 334:
- Derived terms
- unitarity operator, unitarity triangle