Fock State - Energy Eigenstates

Energy Eigenstates

Fock states are eigenstates of the Hamiltonian of the field:

where is the energy eigenvalue corresponding to . When we put in the expression for the Hamiltonian we get:

Therefore energy of the state is given by where is the frequency of the field. Note that even at the energy does not vanish. This is the zero-point energy.

Read more about this topic:  Fock State

Famous quotes containing the word energy:

    “The principle of avoiding the unnecessary expenditure of energy has enabled the species to survive in a world full of stimuli; but it prevents the survival of the aristocracy.”
    —Rebecca West (1892–1983)