Related papers: Non-adiabatic, Relativistic, and Leading-order QED Corrections for Rovibrational Intervals of $^4$He$_2^+$ ($X\ ^2\Sigma

Non-adiabatic, Relativistic, and Leading-order QED Corrections for Rovibrational Intervals of $^4$He$_2^+$ ($X\ ^2\Sigma_\mathrm{u}^+$)

URL: http://arxiv.org/abs/2011.03540v2
Date: Fri, 13 Nov 2020 17:23:23 GMT
Title: Non-adiabatic, Relativistic, and Leading-order QED Corrections for Rovibrational Intervals of $^4$He$_2^+$ ($X\ ^2\Sigma_\mathrm{u}^+$)
Authors: D\'avid Ferenc, Vladimir I. Korobov, and Edit M\'atyus
Abstract summary: The rovibrational intervals of the molecular ion in its $X 2Sigma are computed by including the non-adiabatic, relativistic, and leading-order quantum-electrodynamics corrections. The lowest-energy rotational interval is computed to be $70.937 69$ cm$-1$ in agreement with the most recently reported experimental value.
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License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The rovibrational intervals of the $^4$He$_2^+$ molecular ion in its $X\ ^2\Sigma_\text{u}^+$ ground electronic state are computed by including the non-adiabatic, relativistic, and leading-order quantum-electrodynamics corrections. Good agreement of theory and experiment is observed for the rotational excitation series of the vibrational ground state and the fundamental vibration. The lowest-energy rotational interval is computed to be $70.937\ 69(10)$ cm$^{-1}$ in agreement with the most recently reported experimental value, $70.937\ 589(23)(60)_\text{sys}$ cm$^{-1}$ [L. Semeria, P. Jansen, G.-M. Camenisch, F. Mellini, H. Schmutz, and F. Merkt, Phys. Rev. Lett. 124, 213001 (2020)].

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