Nonrenormalization of phases, softly broken Peccei-Quinn symmetry, and strong-CP problem

Details Nonrenormalization of phases, softly broken Peccei-Quinn symmetry, and strong-CP problem Nonrenormalization of phases, softly broken Peccei-Quinn symmetry, and strong-CP problem

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvd..32..293c&link_type=abstract

Physical Review D (Particles and Fields), Volume 32, Issue 1, 1 July 1985, pp.293-299

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9

General Properties Of Perturbation Theory, Supergravity, Charge Conjugation, Parity, Time Reversal, And Other Discrete Symmetries

Scientific paper

We present a class of gauge models where the phase angle associated with a parameter that breaks a U(1) global symmetry softly receives no renormalization correction due to quantum effects. As application of this idea, we consider recently proposed solutions to the strong-CP problem using softly broken Peccei-Quinn symmetry and clarify the conditions under which it works. We also extend our discussion to some new models.

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