Landau-gauge condensates from the quark propagator on the lattice

被引：61
|
作者：
Arriola, ER [1 ]
Bowman, PO
Broniowski, W
机构：
[1] Univ Granada, Dept Fis Moderna, E-18071 Granada, Spain
[2] Indiana Univ, Ctr Nucl Theory, Bloomington, IN 47405 USA
[3] Polish Acad Sci, H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
来源：
PHYSICAL REVIEW D | 2004年 / 70卷 / 09期
关键词：
D O I：
10.1103/PhysRevD.70.097505
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We compute the dimension-2 condensate <A(2)> and dimension-4 mixed condensate <(q) over bar Aq> from the recent quenched lattice results for the quark propagator in the Landau gauge. We fit the lattice data to the Operator Product Expansion in the fiducial region 1.2 GeVless than or equal toQless than or equal to3 GeV. Our result for the dynamical gluon mass at the scale of 10 GeV2 is m(A)=600-650 MeV, in agreement with independent determinations. For the dimension-4 mixed Landau-gauge condensate we get alpha(s)<(q) over bar gAq>=(-0.11+/-0.03) GeV4. This value is an order of magnitude larger than the <G(2)> gluon condensate.
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页数：4
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