The electric dipole moment (EDM) is an attractive experimental probe of CP violation beyond the standard model, and it may be measured in many systems such as the muon, neutron, atoms, and molecules.
An important physics to be understood is the many-body effect relating the elementary level (TeV scale) CP violation and the final EDM of the composite system to be measured.
In this talk, I review the current understanding of the many-body physics relevant in the context of the EDMs, focussing on the enhancement and suppression of the CP violation, and see the prospects for the discovery of new physics beyond the standard model.