Exact correlation functions of the BCS model in the canonical ensemble

被引：37

作者：

Amico, L

Osterloh, A

机构：

[1] Univ Catania, DMFCI, I-95125 Catania, Italy

[2] Ist Nazl Fis Mat, Unita Catania, Catania, Italy

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.88.127003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We evaluate correlation functions of the BCS model for a finite number of particles. The integrability of the Hamiltonian relates it with the Gaudin algebra G[sl(2)]. Therefore, a theorem that Sklyanin proved for the Gaudin model, can be applied. Several diagonal and off-diagonal correlators are calculated. The finite-size scaling behavior of the pairing correlation function is studied.

引用

页数：4

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