Analytical study of level crossings in the Stark-Zeeman spectrum of ground state OH

Abstract

The ground electronic, vibrational and rotational state of the OH molecule is currently of interest as it can be manipulated by electric and magnetic fields for experimental studies in ultracold chemistry and quantum degeneracy. Based on our recent exact solution of the corresponding effective Stark-Zeeman Hamiltonian, we present an analytical study of the crossings and avoided crossings in the spectrum. These features are relevant to non-adiabatic transitions, conical intersections and Berry phases. Specifically, for an avoided crossing employed in the evaporative cooling of OH, we compare our exact results to those derived earlier from perturbation theory.

5 figures, to be published in Eur. Phys. J. D

References in corpus (11)

• Evaporative cooling of the dipolar radical OH
• Magneto-electrostatic trapping of ground state OH molecules
• Low-energy molecular collisions in a permanent magnetic trap
• OH hyperfine ground state: from precision measurement to molecular qubits
• $\Lambda$-doublet spectra of diatomic radicals and their dependence on fundamental constants
• Loss of molecules in magneto-electrostatic traps due to nonadiabatic transitions
• Ultracold molecular collisions in combined electric and magnetic fields
• Dipolar Radicals in Crossed Electric and Magnetic Fields
• Fine Structure of Open Shell Diatomic Molecules in Combined Electric and Magnetic Fields
• Ground-state OH molecule in combined electric and magnetic fields: Analytic solution of the effective Hamiltonian
• How to detect level crossings without looking at the spectrum