Lattice QCD and the Neutron Electric Dipole Moment

Abstract

The recent lattice QCD calculations of the neutron and proton electric dipole moments (EDMs) and the CP-violating $\pi \mathrm{NN}$ coupling constant due to the $\theta$ term are reviewed. Progress towards nucleon EDM calculations, including the Weinberg three-gluon operator, and the quark chromoelectric dipole moment operator and their renormalization, is also discussed.

Comments: 24 pages, 8 figures, submitted to Annual Review of Nuclear and Particle Science