engleski

On the Interaction of an Isolated State with the Known Infinite-dimensional Quantum System

The interaction of an isolated state T with the known infinite-dimensional quantum system S is considered. An example is the interaction of an isolated molecular state with the electromagnetic field. This problem is the main subject of spectroscopy. Another example is the interaction of an isolated molecular state of a molecule situated on a surface of a solid with this solid. This is the subject of the surface state physics. Such problems are usually treated within the formalism of the perturbation expansion. Recently a new mathematical method for the treatment of sauch problems was suggested. This method produces correct solution of the combined system, however strong the interaction between the state T and the system S.

interaction of quantum systems; perturbation; eigenvalues; eigenstates

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