Source: /cirosantilli/the-schrodinger-equation-hamiltonian-has-to-be-hermitian
= The Schrodinger equation Hamiltonian has to be Hermitian
The <Schrödinger equation> Hamiltonian has to be a <Hermitian> so we will have only positive energies I think: https://quantumcomputing.stackexchange.com/questions/12113/why-does-a-hamiltonian-have-to-be-hermitian