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Off-diagonal long-range order and the Meissner effect

✍ Scribed by Geoffrey L. Sewell


Publisher
Springer
Year
1990
Tongue
English
Weight
328 KB
Volume
61
Category
Article
ISSN
0022-4715

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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