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Long-Range Correlation Energies, Off-diagonal Interactions and

✍ Scribed by Hua Zhao


Book ID
106428735
Publisher
Springer
Year
2010
Tongue
English
Weight
175 KB
Volume
23
Category
Article
ISSN
0896-1107

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Off-diagonal long-range order in the BCS
✍ Marvin E Rensink πŸ“‚ Article πŸ“… 1967 πŸ› Elsevier Science 🌐 English βš– 339 KB

The two-particle reduced density matrix p2 is analyzed for a system of electrons described by the BCS ground state. The existence of off-diagonal longrange order in pZ is demonstrated by explicit calculation of its matrix elements. It is shown that pz has one eigenvalue proportional to N where N is