= Neutron electric dipole moment
{wiki=Neutron_electric_dipole_moment}
The neutron electric dipole moment (nEDM) is a measure of the distribution of electric charge within a neutron. In quantum mechanics, particles with an electric dipole moment have a separation of positive and negative charge in their structure, leading to a non-zero value for the electric dipole moment, which would indicate a departure from perfect symmetry under time reversal and parity transformations (T and P violation).
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