- #1

- 73

- 1

∂

_{0}(Φ,π)

^{T}= matrix((0,1),(-p

^{2},0)) (Φ,π)

^{T}

The Hamiltonian operator iH = matrix((0,1),(-p

^{2},0)) is not a hermitian matrix.

What does this mean? Does this mean Klein Gordon fields don't conserve particle number, or that this is not Unitary? Is a quantum field theory with just Klein Gordon fields not valid?