On lattice actions for static quarks
On lattice actions for static quarks
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关于静态夸克的晶格作用
DOI:
10.1088/1126-6708/2005/08/051
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发表时间:
2005
期刊:
影响因子:
--
通讯作者:
R. Sommer
中科院分区:
文献类型:
--
作者:
M. Della Morte;A. Shindler;R. Sommer
We introduce new discretizations of the action for static quarks. They achieve an exponential improvement (compared to the Eichten-Hill regularization) on the signal to noise ratio in static-light correlation functions. This is explicitly checked in a quenched simulation and it is understood quantitatively in terms of the self energy of a static quark and the lattice heavy quark potential at zero distance. We perform a set of scaling tests in the Schrödinger functional and find scaling violations in the O (a) improved theory to be rather small—for one observable significantly smaller than with the Eichten-Hill regularization. In addition we compute the improvement coefficients of the static light axial current up to O (g 0 4) corrections and the corresponding renormalization constants non-perturbatively. The regularization dependent part of the renormalization of the b-quark mass in static approximation is also determined.
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影响因子:
5
作者:
C. Morningstar;J. Shigemitsu
通讯作者:
J. Shigemitsu
DOI:
10.1016/0550-3213(81)90046-8
发表时间:
1981
期刊:
Nuclear Physics
影响因子:
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通讯作者:
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1993
期刊:
Nuclear Physics
影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
1991
期刊:
Nuclear Physics
影响因子:
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作者:
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通讯作者:
G. Martinelli
DOI:
10.1016/s0550-3213(00)00750-1
发表时间:
2000
期刊:
Nuclear Physics
影响因子:
--
作者:
M. Kurth;R. Sommer
通讯作者:
R. Sommer