Improving the low-lying spectrum of the overlap kernel

被引：2

作者：

Kamleh, W ^{[1
]}

Adams, D

Leinweber, DB

Williams, AG

机构：

[1] Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia

[2] Univ Adelaide, Dept Phys & Math Phys, Adelaide, SA 5005, Australia

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2002年 / 109卷

关键词：

D O I：

10.1016/S0920-5632(02)01394-4

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The action of the overlap-Dirac operator on a vector is typically implemented indirectly through a multi-shift conjugate gradient solver. The compute-time this takes to evaluate depends upon the condition number kappa of the matrix that is used as the overlap kernel. We examine the low-lying spectra of various candidate kernels in an effort to optimise kappa, thereby speeding up the overlap evaluation.

引用

页码：81 / 85

页数：5

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