Leading all-loop quantum contribution to the effective potential in general scalar field theory

Abstract

The RG equation for the effective potential in the leading log (LL) approximation is constructed which is valid for an arbitrary scalar field theory in 4 dimensions. The solution to this equation sums up the leading $\log \varphi$ contributions to all orders of perturbation theory. In general, this is the second order nonlinear partial differential equation, but in some cases it can be reduced to the ordinary one. For particular examples, this equation is solved numerically and the LL effective potential is constructed. The solution has a characteristic discontinuity replacing the Landau pole typical for the ${\varphi }^4$ theory. For a power-like potential no new minima appear due to the Coleman-Weinberg mechanism.

arXiv comment16 pages, 11 figures, Latex

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Cited by in corpus (3)

• Effective potential in leading logarithmic approximation in non-renormalisable $SO(N)$ scalar field theories
• All-loop effective potential for arbitrary scalar models in curved space-time
• Leading UV divergences of quantum corrections to Kähler superpotential in general $\mathcal{N}=1$ chiral model