- #1
spacetimedude
- 88
- 1
In lectures, I learned that in first order perturbation, [itex]\hat{H}_0[/itex] term cancels with [itex]E_0[/itex] term because [itex]\hat{H}_0[/itex] is Hermitian. What property does Hermitian operators hold that cancels with the unperturbed energy?