Electron electric dipole moment
ID: electron-electric-dipole-moment
The electron electric dipole moment (EDM) is a measure of the distribution of electric charge within the electron. In quantum mechanics, a dipole moment is a vector quantity that illustrates the separation of positive and negative charges. In the case of the electron, which is typically considered to be a fundamental particle with no substructure, the EDM would represent a permanent separation of charge, implying a nonzero dipole moment along some axis.
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