Dissociation Energy of Molecular Hydrogen Isotopologues

Abstract

The nonrelativistic energy together with relativistic and quantum electrodynamic corrections for all the molecular hydrogen isotopologues (D${}_2$, T${}_2$, HD, HT, DT) were evaluated without expansion in the electron-nucleus mass ratio. The obtained results significantly improve the uncertainty of theoretical predictions, reaching a value below 1 MHz for the total dissociation energy. We observe good agreement with the experimental value for D${}_2$ and $3\sigma$ discrepancy for the HD molecule, while no experimental values for the dissociation energy of molecules involving tritium have yet been obtained.

7 pages. arXiv admin note: text overlap with arXiv:1812.02980

References in corpus (2)

• Benchmarking theory with an improved measurement of the ionization and dissociation energies of H${}_2$
• Complete ${\alpha }^{6}m$ corrections to the ground state of H${}_2$

Cited by in corpus (14)

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• Analysis methods for the first KATRIN neutrino-mass measurement
• Precision measurement of the fundamental vibrational frequencies of tritium-bearing hydrogen molecules: T${}_2$, DT, HT
• Improved Ionization and Dissociation Energies of the Deuterium Molecule
• Hyperfine components of all rovibrational quadrupole transitions in the H${}_2$ and D${}_2$ molecules
• Leading-order QED effects in the ground electronic state of molecular hydrogen
• Rotational level spacings in HD from vibrational saturation spectroscopy
• Nonrelativistic energy of tritium-containing hydrogen molecule isotopologues
• A Study of New Physics Searches with Tritium and Similar Molecules
• Nuclear magnetic shielding in HD and HT
• Precision measurement of quasi-bound resonances in H${}_2$ and the H + H scattering length
• Ab initio QED calculations in diatomic quasimolecules
• Quantum Monte Carlo study of three-dimensional Coulomb complexes: trions and biexcitons; hydrogen molecules and ions; helium hydride cations; and positronic and muonic complexes
• Integrals for lower bounds to the exact energy