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

共 29 条

[11]

IACHELLO F, 1994, NUCL PHYS A, V570, pC145, DOI 10.1016/0375-9474(94)90278-X

[12]

Korepin V. E., 1997, QUANTUM INVERSE SCAT, V3

[13] CALCULATION OF NORMS OF BETHE WAVE-FUNCTIONS [J].