Theory of nuclear motion in RABBITT spectra

Reconstruction of attosecond beating by interference two-photon transitions (RABBITT) is a powerful photoelectron spectroscopy, offering direct access to internal dynamics the target. It being increasingly applied molecular systems, but general, computationally tractable theory RABBITT spectra in molecules has so far been lacking. We show that under quite general assumptions, can be expressed as convolution vibronic cross-correlation functions and two-electron photoionization matrix elements. specialize expressions commonly-encountered special cases. expect our enable accurate modeling interpretation most medium-sized molecules.