Quantum corrections to energy of short spinning string in AdS5

Details Quantum corrections to energy of short spinning string in AdS5 Quantum corrections to energy of short spinning string in AdS5

2008-06-29

arxiv.org/abs/0806.4758v5

Phys.Rev.D78:066002,2008

Physics

High Energy Physics

High Energy Physics - Theory

27 pages; v2: comments and appendix B about regularization ambiguity added; v3,4: minor corrections; v5: treatment of fermioni

Scientific paper

10.1103/PhysRevD.78.066002

Motivated by desire to shed light on the strong coupling behaviour of anomalous dimensions of "short" gauge theory operators we consider the famous example of folded spinning string in AdS_5 in the limit of small semiclassical spin parameter \S = S/sqrt[lambda]. In this limit the string becomes short and is moving in a near-flat central region of AdS_5. Its energy scales with spin as E = sqrt[2 S] [ a_0 + a_1 S + a_2 S^2 + ...]. We explicitly compute the leading 1-loop quantum AdS_5 x S^5 superstring corrections to the short-string limit coefficients a_0 and a_1 and show, in particular, that a_1 receives a contribution containing \zeta(3).

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