# Hermitian operator

1. May 18, 2009

### trv

1. The problem statement, all variables and given/known data

Using Dirac notation (bra, kets), define the meaning of the term "Hermitian".

2. Relevant equations

3. The attempt at a solution

From what I understand, a hermitian operator is simply one that has the same effect as its hermitian adjoint. So, I'm assuming it should simply be,

$<\psi|\hat{Q}|\psi>=<\psi|\hat{Q}^*|\psi>$

I've seen it written in more complicating ways, so I'm guessing there's a little more to it. Please help.

2. May 18, 2009

### tiny-tim

Last edited by a moderator: Apr 24, 2017