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The γ function in the 1/N f expansion

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Zeitschrift für Physik C Particles and Fields

Abstract

The Callan-Symanzik γ-function is studied in the large number of lepton (in QED) or flavour (in QCD) limit. We have computed analytically 7 terms and they show a striking factorization. We have computed numerically 19 terms and they show a large radius of convergence and two unambiguous zeros within the region of convergence.

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Authors and Affiliations

  1. Department of Theoretical Physics, University of Barcelona, Diagonal 647, Barcelona-28, Spain

    D. Espriu, A. Palanques-Mestre, P. Pascual & R. Tarrach

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  1. D. Espriu
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  2. A. Palanques-Mestre
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  3. P. Pascual
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  4. R. Tarrach
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Espriu, D., Palanques-Mestre, A., Pascual, P. et al. The γ function in the 1/N f expansion. Z. Phys. C - Particles and Fields 13, 153–156 (1982). https://doi.org/10.1007/BF01547679

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  • DOI: https://doi.org/10.1007/BF01547679

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