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[en] It is shown using an explicit model that radiative corrections can restore the symmetry of a system which may appear to be broken at the classical level. This is the reverse of the phenomenon demonstrated by Coleman and Weinberg. Our model is different from theirs, but the techniques are the same. The calculations are done up to the two-loop level and it is shown that the two-loop contribution is much smaller than the one-loop contribution, indicating good convergence of the loop expansion
Journal
Physical Review. D, Particles Fields; ISSN 0556-2821; 
; v. 23(10); p. 2399-2407
; v. 23(10); p. 2399-2407