Spontaneous violation of CP symmetry in the strong interactions

Spontaneous violation of CP symmetry in the strong interactions

Some time ago Dashen [Phys. Rev. D 3, 1879 (1971)] pointed out that spontaneous CP violation can occur in the strong interactions. I show how a simple effective Lagrangian exposes the remarkably large domain of quark mass parameters for which this occurs. I close with some warnings for lattice simul...

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Veröffentlicht in:Physical review letters 2004-05, Vol.92 (20), p.201601-201601
1. Verfasser: Creutz, Michael
Format: Artikel
Sprache:eng
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Zusammenfassung:Some time ago Dashen [Phys. Rev. D 3, 1879 (1971)] pointed out that spontaneous CP violation can occur in the strong interactions. I show how a simple effective Lagrangian exposes the remarkably large domain of quark mass parameters for which this occurs. I close with some warnings for lattice simulations.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.92.201601