Relativistic and QED effects in the fundamental vibration of T${}_2$

Abstract

The hydrogen molecule has become a test ground for quantum electrodynamical calculations in molecules. Expanding beyond studies on stable hydrogenic species to the heavier radioactive tritium-bearing molecules, we report on a measurement of the fundamental T${}_2$ vibrational splitting $(v=0\to 1)$ for $J=0-5$ rotational levels. Precision frequency metrology is performed with high-resolution coherent anti-Stokes Raman spectroscopy at an experimental uncertainty of $10-12$~MHz, where sub-Doppler saturation features are exploited for the strongest transition. The achieved accuracy corresponds to a fifty-fold improvement over a previous measurement, and allows for the extraction of relativistic and QED contributions to T${}_2$ transition energies.

arXiv comment5 pages, 5 figures

References in corpus (7)

• The Fundamental Vibration of Molecular Hydrogen
• Bounds on fifth forces from precision measurements on molecules
• Constraints on extra dimensions from precision molecular spectroscopy
• Complete ${\alpha }^{6}m$ corrections to the ground state of H${}_2$
• Relativistic corrections for the ground electronic state of molecular hydrogen
• Schrödinger equation solved for the hydrogen molecule with unprecedented accuracy
• CARS spectroscopy of the ($v=0\to 1$) band in ${\mathrm{T}}_2$

Cited by in corpus (6)

• Rovibrational energy levels of the hydrogen molecule through nonadiabatic perturbation theory
• Quantum control of molecules for fundamental physics
• Dissociation Energy of Molecular Hydrogen Isotopologues
• Precision measurement of the fundamental vibrational frequencies of tritium-bearing hydrogen molecules: T${}_2$, DT, HT
• Nonrelativistic energy of tritium-containing hydrogen molecule isotopologues
• A Study of New Physics Searches with Tritium and Similar Molecules