unitarity condition

unitarity condition

[‚yü·nə′tar·əd·ē kən‚dish·ən]
(particle physics)
The condition that the scattering matrix for any process be unitary, as a result of the fact that the probability for the system to end in some final state must be unity.
References in periodicals archive ?
While before the creation of the black hole they may have the same support in the spacelike slice, they evolve differently because of the exterior unitarity condition. Bob's system evolves so that his quantum fields are constrained to the exterior of the black hole, while Alice's quantum fields include the interior too.
Map [phi] is said to satisfy the unitarity condition if every eigenprojector P of [C.sub.[phi]] satisfies the condition that (id [cross product] tr)(P) is proportional to the identity operator [I.sub.n].
Let [phi] : [M.sub.n](C) [right arrow] [M.sub.n](C) be a hermiticity-preserving linear map satisfying the unitarity condition from Definition 5.
However, if one imposes the unitarity condition on the rows and columns of the extracted CKM, the new value for this [V.sub.tb] matrix element would be 0.999, in agreement.
The unitarity condition for the CKM matrix in the Standard Model,
We see from this plot that the unitarity condition (T + R = 1) is satisfied.
Currently, superallowed [0.sup.+] [right arrow] [0.sup.+] nuclear [beta]-decay provides a value of |[V.sub.ud]| = 0.9740(5) [7], signaling a deviation from the Unitarity condition by 2.2 [sigma] standard deviations.
If we also want to preserve the unitarity conditions we should take P [member of] Sp(4, C) [intersection] U(4).