"Short" spinning strings and structure of quantum AdS_5 x S^5 spectrum

Details "Short" spinning strings and structure of quantum AdS_5 x S^5 spectrum "Short" spinning strings and structure of quantum AdS_5 x S^5 spectrum

2012-03-26

arxiv.org/abs/1203.5710v2

Physics

High Energy Physics

High Energy Physics - Theory

42p, Latex v2: Comments and summary table of coefficients added

Scientific paper

Using information from the marginality conditions of vertex operators for the AdS_5 x S^5 superstring, we determine the structure of the dependence of the energy of quantum string states on their conserved charges and the string tension proportional to lambda^(1/2). We consider states on the leading Regge trajectory in the flat space limit which carry one or two (equal) spins in AdS_5 or S^5 and an orbital momentum in S^5, with Konishi multiplet states being particular cases. We argue that the coefficients in the energy may be found by using a semiclassical expansion. By analyzing the examples of folded spinning strings in AdS_5 and S^5 as well as three cases of circular two-spin strings we demonstrate the universality of transcendental (zeta-function) parts of few leading coefficients. We also show the consistency with target space supersymmetry with different states belonging to the same multiplet having the same non-trivial part of the energy. We suggest, in particular, that a rational coefficient (found by Basso for the folded string using Bethe Ansatz considerations and which, in general, is yet to be determined by a direct two-loop string calculation) should, in fact, be universal.

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