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A non-perturbative approach to the Coleman- Weinberg mechanism in massless scalar QED

We rederive non-perturbatively the Coleman-Weinberg expression for the effective potential for massless scalar QED. Our result is not restricted to small values of the coupling constants. This shows that the Coleman- Weinberg result can be established beyond the range of validity of perturbation theory. Also, we derive it in a manifestly renormalization group invariant way. It is shown that with the derivation given no Landau ghost singularity arises. The finite temperature case is discussed. Pacs number: 11.10.Ef,11.10.Gh.

preprint1995arXivOpen access
A. P. C. MalbouissonF. S. NogueiraN. F. Svaiter
hep-th
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Open access3 authors1 topic
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A. P. C. MalbouissonF. S. NogueiraN. F. Svaiter

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