A Pseudo-Relativistic Operator for a Two-Electron Ion
نویسنده
چکیده
By means of a unitary transformation scheme, the Coulomb-Dirac operator for two electrons in a central potential is transformed into a pseudo-relativistic operator which allows for the decoupling of the electron and positron degrees of freedom to arbitrary order n in the potential strength. In case of n = 2, relative boundedness properties and positivity of the resulting operator are shown for subcritical potential strength. PACS: 03.65.Pm, 03.65.Db, 02.30.Tb, 02.30.Mv
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تاریخ انتشار 2005