Electron electric dipole moment

The electron electric dipole moment de is an intrinsic property of an electron such that the potential energy is linearly related to the strength of the electric field:

The electron's electric dipole moment (EDM) must be collinear with the direction of the electron's magnetic moment (spin).[1] Within the Standard Model, such a dipole is predicted to be non-zero but very small, at most 10−38 e⋅cm,[2] where e stands for the elementary charge. The discovery of a substantially larger electron electric dipole moment would imply a violation of both parity invariance and time reversal invariance.[3][4]

  1. ^ Eckel, S.; Sushkov, A.O.; Lamoreaux, S.K. (2012). "Limit on the electron electric dipole moment using paramagnetic ferroelectric Eu0.5Ba0.5TiO3". Physical Review Letters. 109 (19): 193003. arXiv:1208.4420. Bibcode:2012PhRvL.109s3003E. doi:10.1103/PhysRevLett.109.193003. PMID 23215379. S2CID 35411253.
  2. ^ Pospelov, M.; Ritz, A. (2005). "Electric dipole moments as probes of new physics". Annals of Physics. 318 (1): 119–169. arXiv:hep-ph/0504231. Bibcode:2005AnPhy.318..119P. doi:10.1016/j.aop.2005.04.002. S2CID 13827759.
  3. ^ Khriplovich, I.B.; Lamoreaux, S.K. (1997). CP violation without strangeness: Electric dipole moments of particles, atoms, and molecules. Springer-Verlag.
  4. ^ P. R. Bunker and P. Jensen (2005), Fundamentals of Molecular Symmetry (CRC Press) ISBN 0-7503-0941-5[1] Chapter 15