Dirac bra-ket notation is introduced for the Whittaker cardinal (Sinc) functions and a previously unreported completeness relation for these quantities is presented and derived. With the use of this completeness relation it becomes simple to transform to a Sinc-basis the eigenvalue equations arising
Coupled quantum-classical description in the Schrödinger representation
✍ Scribed by Yu. A. Rylov
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 245 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
It is shown that the number of dynamical variables computer storage which is necessary for a description is similar for the coupled quantum-classical description and for the pure quantum one. In the Schrodinger representation, the dynamic equations of the coupled quantum-classical description are shown to be nonlinear in terms of the wave function and incompatible with the quantum axiomatics. As a result, the quantum-classical description appears to be impossible in the Heisenberg representation, because it uses essentially the quantum axiomatics, which is incompatible with the quantum-classical description. An idea of a description, intermediate between the purely quantum description and the classical one, is suggested. In this case, the Ž . number of dynamic variables computer storage is several times as large as the classical description, but it is much less than at the pure quantum description.
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