An upper limit to the electric dipole moment of the neutron from lattice QCD
classification
✦ hep-lat
keywords
breakingdipoleelectriclimitmomentneutronnonzerotopological
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A linear increase with the volume of the topological susceptibility can signal spontaneous breaking of parity and time inversion, due to a nonzero vacuum expectation value of the topological charge. Such a breaking would produce a nonzero electric dipole moment of the neutron, d_n. An upper limit to d_n is derived from numerical simulations at increasing volumes.
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