Konishi operator at intermediate coupling

Details Konishi operator at intermediate coupling Konishi operator at intermediate coupling

2010-06-25

arxiv.org/abs/1006.5032v2

J.Phys.A44:065401,2011

Physics

High Energy Physics

High Energy Physics - Theory

lots of figures, v2: improved numerics, c1=2, c2=0, c4 does not vanish

Scientific paper

10.1088/1751-8113/44/6/065401

TBA equations for two-particle states from the sl(2) sector proposed by Arutyunov, Suzuki and the author are solved numerically for the Konishi operator descendent up to 't Hooft's coupling lambda ~ 2046. The data obtained is used to analyze the properties of Y-functions and address the issue of the existence of the critical values of the coupling. In addition we find a new integral representation for the BES dressing phase which substantially reduces the computational time.

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