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
Nepal Physical Society basis. Previously, the office of the society was situated in Tri-Chandra College, Ghantaghar, Kathmandu, Nepal. Currently, the office is in the Central Department of Physics, Tribhuvan University, Kirtipur, Nepal. Nepal Physical Society participated in the 38th International Physics Olympiad in 2007. Nepal Physical Society Nepal Physical Society (NPS) is a professional society of the Nepalese physicists. The small society of about 500 members was established in 1982. To be eligible for membership, one has to hold a minimum of a master's degree in physical science from either Tribhuvan University or another university that is recognized by Tribhuvan University. The NPS