Why are only unitary operations allowed in quantum mechanics?

1.	Why are only unitary operations allowed in quantum mechanics?
Answer» ANSWER:- ➡️Unitary Operators. A linear operator WHOSE inverse is its adjoint is called unitary. These operators can be thought of as generalizations of complex numbers whose absolue value is 1. Like HERMITIAN operators, the eigenvectors of a unitary MATRIX are ORTHOGONAL. HOWEVER, its eigenvalues are not necessarily real. ☢️PLEASE MARK AS BRAINLIEST☢️

Answer»

ANSWER:-

➡️Unitary Operators.

A linear operator WHOSE inverse is its adjoint is called unitary. These operators can be thought of as generalizations of complex numbers whose absolue value is 1. Like HERMITIAN operators, the eigenvectors of a unitary MATRIX are ORTHOGONAL. HOWEVER, its eigenvalues are not necessarily real.

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Why are only unitary operations allowed in quantum mechanics?

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