2008/04/07 by H. S. Nataraj, B. K. Sahoo, B. P. Das +2 · 65 citations
Physics and Astronomy · #Ab initio #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Atomic physics #Atomic units #Caesium #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Dipole #Electron #Magnetic moment #Materials science #Nuclear physics #Paramagnetism #Physics #Quantum mechanics #Rubidium #hep-ph #physics.atom-ph
paper · pdf · doi:10.1103/physrevlett.101.033002
published in Physical Review Letters 101(3), 033002 (American Physical Society) · 4 pages, 1 figure
arxiv created 2008/04/07 · openalex publication_date 2008/07/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The electric dipole moment (EDM) of paramagnetic atoms is sensitive to the intrinsic EDM contribution from that of its constituent electrons and a scalar-pseudoscalar (S-PS) electron-nucleus interaction. The electron EDM and the S-PS contributions to the EDMs of these atoms scale as approximately Z;3. Thus, the heavy paramagnetic atoms will exhibit large EDM enhancement factors. However, the sizes of the couplings are so small that they are of interest of high precision atomic experiments. In this work we have computed the EDM enhancement factors of the ground states of Rb and Cs due to both the electron EDM and the S-PS EDM using the relativistic coupled-cluster theory. The importance of determining precise ab initio enhancement factors and experimental results of atomic EDMs in deducing a reliable limit on the electron EDM is emphasized.