PRACTICAL SOLUTION TO THE MONTE-CARLO SIGN PROBLEM - REALISTIC CALCULATIONS OF FE-54

被引：169

作者：

ALHASSID, Y ^{[1
]}

DEAN, DJ ^{[1
]}

KOONIN, SE ^{[1
]}

LANG, G ^{[1
]}

ORMAND, WE ^{[1
]}

机构：

[1] YALE UNIV,SLOANE PHYS LAB,CTR THEORET PHYS,NEW HAVEN,CT 06520

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.72.613

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a practical solution to the ''sign problem'' in the auxiliary field Monte Carlo approach to the nuclear shell model. The method is based on extrapolation from a continuous family of problem-free Hamiltonians. To demonstrate the resultant ability to treat large shell-model problems, we present results for Fe-54 in the full fp-shell basis using the Brown-Richter interaction. We find the Gamow-Teller beta+ strength to be quenched by 58% relative to the single-particle estimate, in better agreement with experiment than previous estimates based on truncated bases.

引用

页码：613 / 616

页数：4

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