Abstract
An approximate, but non-perturbative, RG equation is derived for theories involving scalars and fermions, ind dimensions withn f flavours. The approximation consists in restricting the parameter space to interactions without derivatives. In a numerical study of the equation ind=3 andd=4, in the range of parameter space explored, no evidence is found of new fixed points generated by the inclusion of fermions.
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Maggiore, M. Non-perturbative renormalization group for field theories with scalars and fermions. Z. Phys. C - Particles and Fields 41, 687–689 (1989). https://doi.org/10.1007/BF01564716
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DOI: https://doi.org/10.1007/BF01564716