Use of Interaction Picture
The purpose of the interaction picture is to shunt all the time dependence due to H0 onto the operators, leaving only H1, I affecting the time-dependence of the state vectors.
The interaction picture is convenient when considering the effect of a small interaction term, H1, S, being added to the Hamiltonian of a solved system, H0, S. By switching into the interaction picture, you can use time-dependent perturbation theory to find the effect of H1, I.
Read more about this topic: Interaction Picture
Famous quotes containing the words interaction and/or picture:
“Those thoughts are truth which guide us to beneficial interaction with sensible particulars as they occur, whether they copy these in advance or not.”
—William James (1842–1910)
“But what now grips his fancy is her face,
And how the cunning picture holds her still
At just that smiling instant when her soul,
Grown sweetly faint, and swept beyond control,
Consents to his inexorable will.”
—Richard Wilbur (b. 1921)