General outline of the projector variation method |
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Authors: | AMK Müller |
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Institution: | Lehrstuhl B für Theoretische Physik, Technische Universität Braunschweig, Germany |
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Abstract: | A method of “varying a projector” has been described recently. The term “projector variation” will be explained from a more general point of view, and certain extensions of the method are presented. Contrary to the Schrödinger variational principle, a pointwise determination of the wave function itself leads to a lowest error of second (not of first) order. |
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