Coherent electronic and vibrational dynamics in the electronic 2D spectra of molecular dimers

Coherent dynamics of excitons are most explicitly observed as oscillations in time-dependent 2D electronic spectra. The need to characterize and understand this complex behaviour has fueled intensive debates which proposed a number of different implications towards the role of electronic and vibrational coherent phenomena and their significance in physical, chemical and even biological processes. Therefore, there is currently a great interest in systems showing mixed electronic and vibrational character [1-3]. In this contribution, the 2D coherent spectra of the simplest mixed system - molecular dimer - is studied in various limis of paramters.