Model Independent Determination of the Gluon Condensate in Four Dimensional SU(3) Gauge Theory

被引:48
作者
Bali, Gunnar S. [1 ,2 ]
Bauer, Clemens [1 ]
Pineda, Antonio [3 ]
机构
[1] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany
[2] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[3] Univ Autonoma Barcelona, Fis Teor Grp, E-08193 Barcelona, Spain
关键词
QUARK EFFECTIVE THEORY; LATTICE QCD; EXPANSION; MASS; RENORMALIZATION; MESONS; ENERGY; SCALE;
D O I
10.1103/PhysRevLett.113.092001
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We determine the nonperturbative gluon condensate of four-dimensional SU(3) gauge theory in a model-independent way. This is achieved by carefully subtracting high-order perturbation theory results from nonperturbative lattice QCD determinations of the average plaquette. No indications of dimension-two condensates are found. The value of the gluon condensate turns out to be of a similar size as the intrinsic ambiguity inherent to its definition. We also determine the binding energy of a B meson in the heavy quark mass limit.
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页数:5
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