Journal
PHYSICS LETTERS B
Volume 472, Issue 3-4, Pages 323-331Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(99)01442-2
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It is shown that certain extremal correlators in four-dimensional N = 2 superconformal field theories (including N = 4 super-Yang-Mills as a special case) have a free-field functional form. It is further argued that the coupling constant dependence receives no correction beyond the lowest order. These results hold for any finite value of N-c. (C) 2000 Published by Elsevier Science B.V. All rights reserved.
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