Phys. Rev. D 47, 3610–3618 (1993)Remarks on fermion-number violation and premature unitarization in high-energy instanton-induced scatteringReceived 14 February 1992; revised 22 October 1992; published in the issue dated 15 April 1993 We critically discuss recent works in which the premature unitarization mechanism is studied with the inclusion of non-nearest-neighbor interactions or beyond leading order in the energy. We also point out that the nonperturbative valley method gives inconsistent results when applied to fermion-number-violating amplitudes, and we argue that, independently of the mechanism of premature unitarization, the nonperturbative amplitudes which violate the fermion number are always exponentially suppressed. © 1993 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.47.3610
DOI:
10.1103/PhysRevD.47.3610
PACS:
11.80.-m, 11.10.Jj, 11.15.Tk, 11.30.Ly
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.