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Extended Y-system for the $AdS_5/CFT_4$ correspondence (1005.3016v3)
Published 17 May 2010 in hep-th, math-ph, and math.MP
Abstract: We study the analytic properties of the $AdS_5/CFT_4$ Y functions. It is shown that the TBA equations, including the dressing factor, can be obtained from the Y-system with some additional information on the square-root discontinuities across semi-infinite segments in the complex plane. The Y-system extended by the discontinuity relations constitutes a fundamental set of local functional constraints that can be easily transformed into integral form through Cauchy's theorem.
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