Hyperfine rovibrational states of H$_3^+$ in a weak external magnetic field

Gustavo Avila; Ayaki Sunaga; Stanislav Komorovsky; Edit Matyus

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arXiv · 2410.19963

Hyperfine rovibrational states of H$_3^+$ in a weak external magnetic field

Gustavo Avila·Ayaki Sunaga·Stanislav Komorovsky·Edit Matyus

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Abstract

Rovibrational energies, wave functions, and Raman transition moments are reported for the lowest-energy states of the H$_3^+$ molecular ion including the magnetic couplings of the proton spins and molecular rotation in the presence of a weak external magnetic field. The rovibrational-hyperfine-Zeeman Hamiltonian matrix is constructed and diagonalized using the rovibrational eigenstates and the proton spin functions. The developed methodology can be used to compute hyperfine-Zeeman effects also for higher-energy rovibrational excitations of H$_3^+$ and other polyatomic molecules. These developments will guide future experiments extending quantum logic spectroscopy to polyatomic systems.

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Gustavo Avila, Ayaki Sunaga, Stanislav Komorovsky, Edit Matyus. 2024-10-25. Hyperfine rovibrational states of H$_3^+$ in a weak external magnetic field. https://arxiv.org/abs/2410.19963

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