Quality of variational trial states

被引：21

作者：

Lucha, W ^{[1
]}

Schöberl, FF

机构：

[1] Austrian Acad Sci, Inst Hochenergiephys, Vienna, Austria

[2] Univ Vienna, Inst Theoret Phys, Vienna, Austria

来源：

PHYSICAL REVIEW A | 1999年 / 60卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.60.5091

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Various measures for the accuracy of approximate eigenstates of semibounded self-adjoint operators H in quantum theory, derived, e.g., by some variational technique are scrutinized. In particular, the matrix elements of the commutator of the operator H and (suitably chosen) different operators with respect to degenerate approximate eigenstates of H obtained by the variational methods are proposed as criteria for the accuracy of variational eigenstates.

引用

页码：5091 / 5094

页数：4

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