Most of my research has been in the general area of ergodic theory and dynamical systems,with a particular emphasis on the interaction with geometry, analysis, number theory andmathematical physics. My most referenced works in the mathematics literature seem to berelated to dynamical zeta functions. On the other hand, my most cited papers in the physicsliterature are those on decay of correlations and resonances. However, these are basically“two sides of the same coin”.