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arXiv · hep-ph/0110279

Renormalization Group Flow in large N_c

J. Meyer·K. Schwenzer·H. -J. Pirner·A. Deandrea
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Abstract

We calculate renormalization group flow equations for the linear sigma-model in large N_c approximation. The flow equations decouple and can be solved analytically. The solution is equal to a self consistent solution of the NJL model in the same approximation, which shows that flow equations are a promising method to extend the calculation to higher order in 1/N_c. Including explicit chiral symmetry breaking, the large N_c approximation describes physics reasonably well. We further compare the analytic solution to the usually used polynomial truncation and find consistency.

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J. Meyer, K. Schwenzer, H. -J. Pirner, A. Deandrea. 2001-12-12. Renormalization Group Flow in large N_c. https://doi.org/10.1016/s0370-2693(01)01482-4

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