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- W2186286222 abstract "Vhcn discussing time dcpendent pcrturbation theory in quantum meehanics, students oeeasionalIy ask whethcr thcre are time dependent Schrodingcr equations that can be sol ved cxactly. They then suggest that lhis would allow a comparison betwccn cxact and per- turbative transitions betwccn cnergy states indueed by an interaction. In this paper we implcment thisprogram for a lIamiltonian in a one dimensional spaec eonsisting oCthe kinetic cnergy plus a delta fune- tion interaction. The cxact solutions were obtained with the help oC thosc developed long ago for the problcm of diffraction in time and, as expeeted, they give the pcrturbative result Corlarge times and weak interactions. In thc final scction we indicatc that the validity oC our conclusions is more general than the simple examplc that illustrates them in this paper." @default.
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- W2186286222 date "1991-01-01" @default.
- W2186286222 modified "2023-09-27" @default.
- W2186286222 title "Comparison between perturbative and exact transitions induced by an interaction" @default.
- W2186286222 hasPublicationYear "1991" @default.
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