Improved gauge actions on anisotropic lattices. II. η in the medium coupling region
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00023373
ID | 23373 |
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creator |
Sakai, Sunao
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NDC |
Physics
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abstract | For improved actions composed of plaquette and rectangular six-link loops, η, the ratio of renormalized to bare anisotropies, is calculated for ξ=2, 3, 4, and 6 in the β region where numerical simulations such as hadron spectroscopy are currently carried out. The β dependence of η for the renormalization-group-improved actions is quite different from those of the standard and Symanzik actions. In the Iwasaki and DBW2 (doubly blocked from Wilson action in two-coupling space) actions, η remains almost constant in a wide range of β, which is also different from the one-loop perturbative results, while in the case of the Symanzik action, η increases as β decreases, which is qualitatively similar to the perturbative result, but the slope is steeper. In the calculation of η close to and in the confined phase, we have applied a link integration method to suppress the fluctuation of the gauge field. Some technical details of the integration method are summarized.
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journal title |
Physical Review D - Particles, Fields, Gravitation and Cosmology
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volume | Volume 69
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issue | Issue 11
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start page | 114504
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date of issued | 2004
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publisher | The American Physical Society
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issn | 1550-7998
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ncid | |
publisher doi | |
language |
eng
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nii type |
Journal Article
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HU type |
Journal Articles
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DCMI type | text
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format | application/pdf
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text version | publisher
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rights | Copyright (c) 2004 The American Physical Society
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relation url | |
department |
Information Media Center
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