His current research interests include: the development of advanced pattern recognition techniques to extract dynamical information (isomerization, intramolecular proton transfer, energy flow, and fluxional behavior) from highly excited vibrational spectra of polyatomic molecules; spectroscopic characterization of triplet states of small polyatomic molecules, especially the doorway-mediated mechanism of Intersystem Crossing; and the mechanisms of energy exchange between electronic and nuclear degrees of freedom, through the spectroscopic study of core-nonpenetrating Rydberg states of diatomic molecules. Robert Field has co-authored three monographs: Perturbations in the Spectra of Diatomic Molecules (1986), The Spectra and Dynamics of Diatomic Molecules (2004), and The Spectra and Dynamics of Small Molecules (2015); he also has co-edited monographs entitled Molecular Dynamics and Spectroscopy by Stimulated Emission Pumping (1995) and Nonlinear Spectroscopy for Molecular Structure Determination (1998).