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Journal Articles Physical Review A Year : 2021

Leading-order relativistic corrections to the g-factor of H2+


Relativistic corrections of order α 2 to the g-factor of H + 2 are calculated with a high accuracy of 9 significant digits for a wide range of rovibrational states. The precision of previous calculations [R. A. Hegstrom, Phys. Rev. A 19, 17 (1979)] is improved by about 5 orders of magnitude by performing nonadiabatic variational calculations and by including recoil corrections. These results allow for non-destructive identification of the internal state through measurement of spin-flip transition frequencies, which is a crucial requirement for proposed spectroscopy experiments on H + 2 and its antimatter counterpartH − 2 in Penning traps [E. G. Myers, Phys. Rev. A 98, 010101(R) (2018)]. Further, they pave the way towards precision calculations of the g-factor through calculation of higher-order QED corrections and hence to an alternative precision route to obtaining the proton-electron mass ratio.
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hal-03341672 , version 1 (11-09-2021)



Jean-Philippe Karr. Leading-order relativistic corrections to the g-factor of H2+. Physical Review A, 2021, 104 (3), pp.032822. ⟨10.1103/PhysRevA.104.032822⟩. ⟨hal-03341672⟩
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