TY - JOUR

T1 - Energy levels of radium monofluoride RaF in external electric and magnetic fields to search for P- and T, P-violation effects

AU - Petrov, A. N.

AU - Skripnikov, L.

N1 - Funding Information: All molecular calculations except the QED contribution to and have been supported by the Russian Science Foundation Grant No. 18-12-00227. Calculations of the QED contributions to and have been supported by RFBR Grant No. 20-32-70177. Electronic structure calculations have been carried out using the computing resources of the federal collective usage center Complex for Simulation and Data Processing for Mega-science Facilities at NRC Kurchatov Institute , and the computers of Quantum Chemistry Lab at NRC “Kurchatov Institute”–PNPI. Publisher Copyright: © 2020 American Physical Society.

PY - 2020/12/1

Y1 - 2020/12/1

N2 - The RaF molecule is considered to be a potential candidate to search for the electron electric dipole moment and other effects of the time-reversal (T) and spatial parity (P) symmetries violation of fundamental interactions as well as T-even, P-odd effects. Recently, the existence of a suitable laser-cooling scheme for this molecule was proven experimentally, R. F. Garcia Ruiz et al. [Nature (London) 581, 396 (2020)NATUAS0028-083610.1038/s41586-020-2299-4]. In the present paper, we study energy levels, g-factors, and sensitivities to the electron electric dipole moment as functions of the external electric field for the lowest rotational levels of RaF224,226,228 molecules. The state with zero sensitivity to the electron electric dipole moment suitable to test systematic effects is found. Also energy levels of RaF223,225 as functions of the external magnetic field are calculated for the lowest rotational levels. The values of magnetic fields corresponding to the crossing of the levels of opposite parity are found. For these values of the magnetic field, the off-diagonal matrix element of the nuclear spin-dependent parity violation interaction is calculated. The obtained data can be used to design experiments to search for the T,P- and P-violating effects using the RaF molecule.

AB - The RaF molecule is considered to be a potential candidate to search for the electron electric dipole moment and other effects of the time-reversal (T) and spatial parity (P) symmetries violation of fundamental interactions as well as T-even, P-odd effects. Recently, the existence of a suitable laser-cooling scheme for this molecule was proven experimentally, R. F. Garcia Ruiz et al. [Nature (London) 581, 396 (2020)NATUAS0028-083610.1038/s41586-020-2299-4]. In the present paper, we study energy levels, g-factors, and sensitivities to the electron electric dipole moment as functions of the external electric field for the lowest rotational levels of RaF224,226,228 molecules. The state with zero sensitivity to the electron electric dipole moment suitable to test systematic effects is found. Also energy levels of RaF223,225 as functions of the external magnetic field are calculated for the lowest rotational levels. The values of magnetic fields corresponding to the crossing of the levels of opposite parity are found. For these values of the magnetic field, the off-diagonal matrix element of the nuclear spin-dependent parity violation interaction is calculated. The obtained data can be used to design experiments to search for the T,P- and P-violating effects using the RaF molecule.

UR - http://www.scopus.com/inward/record.url?scp=85097574452&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.102.062801

DO - 10.1103/PhysRevA.102.062801

M3 - статья

VL - 102

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

IS - 6

M1 - 062801

ER -