In quantum mechanics, the interaction picture (also known as the interaction representation or Dirac picture after Paul Dirac, who introduced it) is an...

Schrödinger picture in which observables are constant and the states evolve in time. It further serves to define a third, hybrid, picture, the interaction picture...

Schrödinger picture and to operators in the Heisenberg picture. There is also an intermediate formulation known as the interaction picture (or Dirac picture) which...

a time-ordered exponential of the integrated Hamiltonian in the interaction picture; it may also be expressed using Feynman's path integrals. In both...

from the Heisenberg picture which keeps the states constant while the observables evolve in time, and from the interaction picture in which both the states...

Rudolf Haag developed an argument against the existence of the interaction picture, a result now commonly known as Haag's theorem. Haag's original proof...

Unitary transformations can be seen as a generalization of the interaction (Dirac) picture. In the latter approach, a Hamiltonian is broken into a time-independent...

constant. This corresponds to the interaction picture in quantum mechanics. In the more common Schrödinger picture, even the states of free particles...

k ) | k ⟩ {\displaystyle H_{0}|k\rangle =E(k)|k\rangle } In the interaction picture, the state ket is defined by | k ( t ) ⟩ I = e i H 0 t / ℏ | k (...

The evolution operator is obtained in the interaction picture, where time evolution is given by the interaction Hamiltonian, which is the integral over...

stems from the form of the Hamiltonian in the interaction picture, as shown below. By switching to this picture the evolution of an atom due to the corresponding...

is a perturbative expansion of the time evolution operator in the interaction picture. Each term can be represented by a sum of Feynman diagrams. This...

The interaction picture does not always exist, though. In interacting quantum field theories, Haag's theorem states that the interaction picture does...

then quantizes the theory to obtain a Hamiltonian system in the interaction picture in such a way that the "unphysical" fields introduced by the gauge...

holds, then the integrand becomes approximately zero before the interaction-picture density operator changes significantly. In this case, the so-called...

particle physics, the weak interaction, weak force or the weak nuclear force, is one of the four known fundamental interactions, with the others being electromagnetism...

Schrödinger picture or Heisenberg picture, it allows more easily for the inclusion of incoherent processes, which represent environmental interactions. The density...

field operators. By transforming the fields and states into the interaction picture, this is rewritten as G n ( x 1 , … , x n ) = ⟨ 0 | T { ϕ ( x 1 )...

{\displaystyle \rho (t)=G(t)\rho (0)G(t)^{\dagger }.} If one enters the interaction picture, choosing to focus on some component H 1 {\displaystyle H_{1}} of...

expectation values of Heisenberg-picture fields in the interacting vacuum) as expectation values of interaction picture fields in the non-interacting vacuum...

representation of the mathematical expressions describing the behavior and interaction of subatomic particles. The scheme is named after American physicist...

field theory, it is often more convenient to use the interaction picture. The interaction picture operator is O I ( t ) = U 0 † ( t , 0 ) O ( 0 ) U 0 (...

chiral lattice theory for fermions. Haag's theorem states that the interaction picture does not exist in an interacting, relativistic, quantum field theory...

hyperfine interaction, m* is the effective mass of the electrons in the crystal, and km is the Fermi momentum. Intuitively, we may picture this as when...

interacting bosonic fields in the interaction picture, where the fields evolve in time as if free and the effects of the interaction are encoded in the evolution...

as a small perturbation, it is convenient to now use instead the interaction picture representation, | n ^ ( t ) ⟩ , {\displaystyle \left|{\hat {n}}(t)\right\rangle...

π k {\displaystyle \lambda =2\pi k} . Now we will move into the interaction picture with respect to H H O {\displaystyle H_{\rm {HO}}} and H s p i n...

SAGE Publications: 16. Wang, Liying (2020). "The Influence of Picture Book Interaction Design on Preschool Children's Reading Experience". HCI International...

In micro-sociology, interactionism is a theoretical perspective that sees social behavior as an interactive product of the individual and the situation...

simulation of the reaction-coordinate spin-boson model employing an interaction picture". J. Chem. Phys. 146 (12): 124112. Bibcode:2017JChPh.146l4112W. doi:10...