Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/11060
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Type: | Journal article |
Title: | Improving the low-lying spectrum of the overlap kernel |
Author: | Kamleh, W. Adams, D. Leinweber, D. Williams, A. |
Citation: | Nuclear Physics B - Proceedings Supplements, 2002; 109(1):81-85 |
Publisher: | Elsevier Science BV |
Issue Date: | 2002 |
ISSN: | 0920-5632 |
Organisation: | Special Research Centre for the Subatomic Structure of Matter |
Statement of Responsibility: | W. Kamleh, D. Adams, D. B. Leinweber and A. G. Williams |
Abstract: | The action of the overlap-Dirac operator on a vector is typically implemented in directly 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. |
Description: | Copyright © 2002 Published by Elsevier Science B.V. All rights reserved. Copyright © 2001. Submitted to Cornell University’s online archive www.arXiv.org in 2001 by Waseem Kamleh. Post-print sourced from www.arxiv.org. |
DOI: | 10.1016/S0920-5632(02)01394-4 |
Description (link): | http://www.elsevier.com/wps/find/journaldescription.cws_home/505717/description#description |
Published version: | http://dx.doi.org/10.1016/s0920-5632(02)01394-4 |
Appears in Collections: | Aurora harvest 7 Special Research Centre for the Subatomic Structure of Matter publications |
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hdl_11060.pdf | 157.76 kB | Publisher's post-print | View/Open |
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