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
Deflection (physics) interaction, some energy must be converted into alternative forms of energy or is absorbed by the deformation of the objects involved in the collision. Deflection (physics) A deflection, in physics, refers to the change in an object's velocity as a consequence of contact (collision) with a surface or the influence of a field. Examples of the former include a ball bouncing off the ground or a bat; examples of the latter include a beam of electrons used to produce a picture, or the relativistic bending of light due to gravity. An object's deflective efficiency can never equal or surpass 100%,