Hermitian Operators

A **physical variable must have real expectation values** (and eigenvalues).
This implies that the operators representing physical variables have some special properties.

By computing the complex conjugate of the expectation value of a physical variable,
we can easily **show that physical operators are their own Hermitian conjugate**.

Operators that are their own Hermitian Conjugate are called **Hermitian Operators**.

Jim Branson 2013-04-22