Interaction picture as any other operator. In particular, let and be the density matrices in the interaction picture and the Schrödinger picture respectively. If there is probability to be in the physical state |"ψ"〉, then Transforming the Schrödinger equation into the interaction picture gives which states that in the interaction picture, a quantum state is evolved by the interaction part of the Hamiltonian as expressed in the interaction picture. If the operator "A" is time-independent (i.e., does not have "explicit time dependence"; see above), then the corresponding time evolution for "A"("t") is given by In the interaction picture the operators evolve in
Bulletin of the Lebedev Physics Institute Bulletin of the Lebedev Physics Institute Bulletin of the Lebedev Physics Institute (Russian: "Краткие сообщения по физике", "Kratkue Soobsheniya po fisike") is a peer-reviewed scientific journal of physics. The journal was established in 1970, and is published by the Lebedev Physical Institute (in Russian) a monthly basis. Springer publishes an English translation of the journal. It is edited by Oleg N. Krokhin. The online version is available since 2007. The "Bulletin" covers research results from Prokhorov General Physics Institute and the Institute for Nuclear Research of the Russian Academy of Sciences in addition to those of the Lebedev Physical Institute.