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
收藏
页码：81 / 85
页数：5
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