Speaker
Description
Time-resolved angle-resolved photoemission spectroscopy (tr-ARPES) provides direct access to the non-equilibrium electronic structure of solids, combining sub-femtosecond temporal resolution with momentum-resolved spectral information. On the theoretical side, time-dependent density functional theory (TDDFT) has become a key ab-initio approach for modeling ultrafast processes in real materials, capturing the evolution of electronic states under time-dependent external fields. The combination of tr-ARPES and TDDFT opened the door to a first-principles understanding of photoinduced phenomena across a broad range of dynamical regimes, ranging from Floquet-engineered band structures to transient carrier populations and non-thermal electronic states. We discuss recent applications of TDDFT-based simulations of tr-ARPES, highlighting methodological advances, challenges related to spectral interpretation, and emerging opportunities for linking theory and experiment in strongly driven systems.