Two-loop test of the N=6 Chern-Simons theory S-matrix

Details Two-loop test of the N=6 Chern-Simons theory S-matrix Two-loop test of the N=6 Chern-Simons theory S-matrix

2009-01-21

arxiv.org/abs/0901.3334v2

JHEP 0903:144,2009

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, no figure; references added

Scientific paper

10.1088/1126-6708/2009/03/144

Starting from the integrable two-loop spin-chain Hamiltonian describing the anomalous dimensions of scalar operators in the planar N=6 superconformal Chern-Simons theory of ABJM, we perform a direct coordinate Bethe ansatz computation of the corresponding two-loop S-matrix. The result matches with the weak-coupling limit of the scalar sector of the all-loop S-matrix which we have recently proposed. In particular, we confirm that the scattering of A and B particles is reflectionless. As a warm up, we first review the analogous computation of the one-loop S-matrix from the one-loop dilatation operator for the scalar sector of planar N=4 superconformal Yang-Mills theory, and compare the result with the all-loop SU(2|2)^{2} S-matrix.

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