Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/6944
Title: Contribution of relativistic quantum chemistry to electron’s electric dipole moment for CP violation
Authors: Abe, M
Gopakumar, G
Das, B. P
Tatewaki, H
Mukherjee, D
Hada, M
Issue Date: 2015
Publisher: AIP Publishing
Citation: AIP Conference Proceedings, Vol.1702, 090048
Abstract: The search for the electric dipole moment of the electron (eEDM) is important because it is a probe of Charge Conjugation-Parity (CP) violation. It can also shed light on new physics beyond the standard model. It is not possible to measure the eEDM directly. However, the interaction energy involving the effective electric field (E eff) acting on an electron in a molecule and the eEDM can be measured. This quantity can be combined with E eff, which is calculated by relativistic molecular orbital theory to determine eEDM. Previous calculations of E eff were not sufficiently accurate in the treatment of relativistic or electron correlation effects. We therefore developed a new method to calculate E eff based on a four-component relativistic coupled-cluster theory. We demonstrated our method for YbF molecule, one of the promising candidates for the eEDM search. Using very large basis set and without freezing any core orbitals, we obtain a value of 23.1 GV/cm for E eff in YbF with an estimated error of less than 10%. The error is assessed by comparison of our calculations and experiments for two properties relevant for E eff, permanent dipole moment and hyperfine coupling constant. Our method paves the way to calculate properties of various kinds of molecules which can be described by a single-reference wave function.
Description: Restricted Access
URI: http://hdl.handle.net/2248/6944
ISSN: 0094-243X
???metadata.dc.rights???: © AIP Publishing
???metadata.dc.relation.uri???: http://dx.doi.org/10.1063/1.4938856
Appears in Collections:IIAP Publications

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