My primary expertise is in the field of intermolecular interactions. Here I have made major advances in the fundamental electronic structure methods that are used. One of these is the symmetry-adapted perturbation theory based on density-functional theory, or SAPT(DFT). I have also developed advanced methods for computing molecular properties in distributed form: these include the ISA-DMA multipole moments, ISA-Pol frequency-dependent polarizabilities and dispersion models, and WSM polarizabiliity and dispersion models. All of these methods, as well as key methods to combine them to generate intermolecular force-fields, are implemented in the CamCASP program which has been written by me and my long-term collaborator, Prof. Anthony Stone (Cambridge).
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