Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2003-01-15
JHEP 0304 (2003) 038
Physics
High Energy Physics
High Energy Physics - Theory
27 pages. Minor changes to text and references
Scientific paper
10.1088/1126-6708/2003/04/038
A systematic construction is presented of 1/4 BPS operators in N=4 superconformal Yang-Mills theory, using either analytic superspace methods or components. In the construction, the operators of the classical theory annihilated by 4 out of 16 supercharges are arranged into two types. The first type consists of those operators that contain 1/4 BPS operators in the full quantum theory. The second type consists of descendants of operators in long unprotected multiplets which develop anomalous dimensions in the quantum theory. The 1/4 BPS operators of the quantum theory are defined to be orthogonal to all the descendant operators with the same classical quantum numbers. It is shown, to order $g^2$, that these 1/4 BPS operators have protected dimensions.
D'Hoker Eric
Heslop Paul
Howe Paul
Ryzhov Anton V.
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