Precision spectroscopy of the molecular ion HD+: control of Zeeman shifts

Abstract

Precision spectroscopy on cold molecules can potentially enable novel tests of fundamental laws of physics and alternative determination of some fundamental constants. Realizing this potential requires a thorough understanding of the systematic effects that shift the energy levels of molecules. We have performed a complete ab initio calculation of the magnetic field effects for a particular system, the heteronuclear molecular hydrogen ion HD+. Different spectroscopic schemes have been considered, and numerous transitions, all accessible by modern radiation sources and exhibiting well controllable or negligible Zeeman shift, have been found to exist. Thus, HD+ is a perspective candidate for determination of the ratio of electron-to-nuclear reduced mass, and for tests of its time-independence.

A Table added, references and figures updated

References in corpus (5)

• Precision Test of Mass Ratio Variations with Lattice-Confined Ultracold Molecules
• Observation of the 1S0 - 3P0 clock transition in 27Al+
• Enhanced sensitivity to variation of $m_e/m_p$ in molecular spectra
• Ultracold molecules: new probes on the variation of fundamental constants
• Relativistic corrections of mα^6 order to the ro-vibrational spectrum of H_2^+ and HD^+ molecular ions

Cited by in corpus (3)

• The static and dynamic polarisability, and the Stark and black-body radiation frequency shifts of the molecular hydrogen ions H2+, HD+, and D2+
• The electric quadrupole moment of molecular hydrogen ions and their potential for a molecular ion clock
• Infrared dynamic polarizability of HD+ rovibrational states