Thermal and microcanonical treatments of a pairing Hamiltonian

被引：14

作者：

Rossignoli, R ^{[1
]}

机构：

[1] NATL UNIV LA PLATA, DEPT FIS, RA-1900 LA PLATA, ARGENTINA

来源：

PHYSICAL REVIEW C | 1996年 / 54卷 / 03期

关键词：

D O I：

10.1103/PhysRevC.54.1230

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The validity of microscopic thermal treatments in comparison with microcanonical results is analyzed for the case of a pairing interaction. The approximate evaluation of microcanonical averages by means of saddle point and moment expansion methods is also examined. Results are shown for a 20-level model, where exact microcanonical averages and level densities are compared with exact thermal results and with those given by the BCS and static path approximations.

引用

页码：1230 / 1239

页数：10

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