Anderson Orthogonality Theorem ---Overlap Integral between Two Ground States with Differnt Centers of Local Potential---
Abstract
The overlap integral between two ground states of the conduction electron system with a local potential at each different site is studied. The overlap integral is obtained for the system with 3 nonzero partial wave components of scattering, and this result is extended to the general case with n nonzero phase shifts. It is shown that the calculation of the exponent of the overlap integral can be reduced to solving an eigenvalue problem.
- Publication:
-
Progress of Theoretical Physics
- Pub Date:
- September 1987
- DOI:
- 10.1143/PTP.78.583
- Bibcode:
- 1987PThPh..78..583K