The variational method complemented with the use of explicitly correlated Gaussian basis
functions is one of the most powerful approaches currently used for calculating the …

Precision physics aims to use atoms and molecules to test and develop the fundamental
theory of matter, possibly beyond the Standard Model. Most of the atomic and molecular …

We describe the 2023 release of the spectral synthesis code Cloudy. Since the previous
major release, migrations of our online services motivated us to adopt git as our version …

This paper describes the status of the 2012 edition of the HITRAN molecular spectroscopic
compilation. The new edition replaces the previous HITRAN edition of 2008 and its updates …

Highly accurate results from frequency measurements on neutral hydrogen molecules H 2,
HD, and D 2 as well as the HD+ ion can be interpreted in terms of constraints on possible …

The fundamental ground tone vibration of H 2, HD, and D 2 is determined to an accuracy
of<? format?> 2× 10-4 cm-1 from Doppler-free laser spectroscopy in the collisionless …

The dissociation energy of H 2 represents a benchmark quantity to test the accuracy of first-
principles calculations. We present a new measurement of the energy interval between the …

We report results from a Far Ultraviolet Spectrographic Explorer (FUSE) survey of interstellar
molecular hydrogen (H 2) in the Galactic disk toward 139 O-type and early B-type stars at …

Spectroscopy of hydrogen can be used for a search into physics beyond the Standard
Model. Differences between the absorption spectra of the Lyman and Werner bands of H 2 …

Highly accurate theoretical predictions of transition energies in the radium monofluoride
molecule, 226 RaF, and radium cation, 226 Ra+, are reported. The considered transition X 2 …