A Simple Solution to the Strong CP Problem with a Harmless Axion

@article{Dine1981ASS,
  title={A Simple Solution to the Strong CP Problem with a Harmless Axion},
  author={Michael Dine and Willy Fischler and Mark Allen Srednicki},
  journal={Physics Letters B},
  year={1981},
  volume={104},
  pages={199-202}
}
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References

SHOWING 1-10 OF 17 REFERENCES
CP Conservation in the Presence of Pseudoparticles
We give an explanation of the $\mathrm{CP}$ conservation of strong interactions which includes the effects of pseudoparticles. We find it is a natural result for any theory where at least one flavor
Problem of Strong $P$ and $T$ Invariance in the Presence of Instantons
The requirement that P and T be approximately conserved in the color gauge theory of strong interactions without arbitrary adjustment of parameters is analyzed. Several possibilities are identified,
A new light boson
It is pointed out that a global U(1) symmetry, that has been introduced in order to preserve the parity and time-reversal invariance of strong interactions despite the effects of instantons, would
Symmetry Breaking Through Bell-Jackiw Anomalies
In models of fermions coupled to gauge fields certain current-conservation laws are violated by Bell-Jackiw anomalies. In perturbation theory the total charge corresponding to such currents seems to
Vacuum Periodicity in a Yang-Mills Quantum Theory
We propose a description of the vacuum in Yang-Mills theory and arrive at a physical interpretation of the pseudoparticle solution and the attendant violation of symmetries. The existence of
...
...