Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-07-16
JHEP 0210 (2002) 005
Physics
High Energy Physics
High Energy Physics - Theory
Latex file, 12 pages, no figures, use JHEP3.cls
Scientific paper
10.1088/1126-6708/2002/10/005
We consider supergravity configuration of D5 branes wrapped on supersymmetric 2-cycles and use it to calculate one-point and two-point Green functions of some special operators in N=2 super Yang-Mills theory. We show that Green functions obtained from supergravity include two very different parts. One of them corresponds to perturbative results of quantum field theory, and another is a non-perturbative effect which corresponds to contribution from instantons with fractional charge. Comparing Green functions obtained from supergravity and gauge theory, we obtain radial/energy-scale relation for this gauge/gravity correspondence with N=2 supersymmetry. This relation leads right beta-function of N=2 SYM from supergravity configuration.
Hu Seng
Wang Xiao-Jun
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