We develop and implement methodologies in the framework of Quantum, Semiclassical and (nonlinear) Classical Mechanics, for the analysis and computation of spectra, of properties and of dynamics of Atoms and Molecules.
Our interests and publications involve, among other things, issues on the many-body problem in excited states, on resonances and irreversibility, on theory and computation of electronic structures in the discrete and continuous spectra, on aspects of the response of atomic and molecular states to external static and dynamic fields, on Rydberg and multiply excited states, on control of field-induced processes, on nonlinear classical mechanics and problems of chaos in microscopic systems, etc.

Analysis and calculation of excited and highly excited states of atoms and of negative ions via the state-specific approach- Rydberg states- Multiply excited states.