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CP symmetry and the strong interactions

Michael Creutz
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Abstract

I discuss several aspects of CP non-invariance in the strongly interacting theory of quarks and gluons. I use a simple effective Lagrangian technique to map out the region of quark masses where CP symmetry is spontaneously broken. I then turn to the possible explicit CP violation arising from a complex quark mass. After summarizing the definition of the renormalized theory as a limit, I argue that attempts to remove the CP violation by making the lightest quark mass vanish are not well defined. I close with some warnings for lattice simulations.

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Michael Creutz. 2003-09-21. CP symmetry and the strong interactions. https://arxiv.org/abs/hep-th/0303254

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