Abstract
For O(N), U(N) and SU(N) groups, we study the weak coupling behaviour of the one-link integrals using their Schwinger-Dyson equations. Special attention is paid to the perturbative corrections to the large N limit. In the case of unitary groups, the 1/N 2 correction is obtained explicitly.
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Brihaye, Y., Rossi, P. On the one-link integrals over compact groups. Lett Math Phys 8, 207–215 (1984). https://doi.org/10.1007/BF00402236
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DOI: https://doi.org/10.1007/BF00402236