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- Title
Perturbative search for fixed lines in large-N gauge theories.
- Authors
Dymarsky, Anatoly; Klebanov, Igor R.; Roiban, Radu
- Abstract
The logarithmic running of marginal double-trace operators is a general feature of 4-d field theories containing scalar fields in the adjoint or bifundamental representation. Such operators provide leading contributions in the large-N limit; therefore, the leading terms in their beta functions must vanish for a theory to be large-N conformal. We calculate the one-loop beta functions in orbifolds of the 풩 = 4 SYM theory by a discrete subgroup Γ of the SU(4) R-symmetry, which are dual to string theory on AdS5 × S5/Γ. We present a general strategy for determining whether there is a fixed line passing through the origin of the coupling constant space. Then we study in detail some classes of non-supersymmetric orbifold theories. Among our examples, which include orbifolds acting freely on the S5, we do not find any large-N non-supersymmetric theories with fixed lines passing through the origin. Connection of these results with closed string tachyon condensation in AdS5 × S5/Γ is discussed.
- Publication
Journal of High Energy Physics, 2005, Vol 2005, Issue 8, p011
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1088/1126-6708/2005/08/011