The advent of pump-probe spectroscopy techniques paved the way to the exploration of
ultrafast dynamics of electrons and phonons in crystalline solids. Following photo-absorption …

The theory of nonequilibrium Green functions (NEGF) has seen a rapid development over
the recent three decades. Applications include diverse correlated many‐body systems in …

The dynamics of strongly correlated fermions following an external excitation reveals
extremely rich collective quantum effects. Examples are fermionic atoms in optical lattices …

We study high-harmonic generation (HHG) in the one-dimensional Hubbard model in order
to understand its relation to elementary excitations as well as the similarities and differences …

Pum** graphene with circularly polarized light is the archetype of light-tailoring
topological bands. Realizing the induced Floquet-Chern-insulator state and demonstrating …

The interaction of electrons with quantized phonons and photons underlies the ultrafast
dynamics of systems ranging from molecules to solids, and it gives rise to a plethora of …

We propose a method to improve the computational and memory efficiency of numerical
solvers for the nonequilibrium Dyson equation in the Keldysh formalism. It is based on the …

We investigate out-of-equilibrium dynamics in an excitonic insulator (EI) with a finite-
momentum pairing perturbed by a laser-pulse excitation and a sudden coupling to fermionic …

We consider a two-band spinless model describing an excitonic insulator (EI) on the two-
dimensional square lattice with anisotropic hop** parameters and electron-phonon (el-ph) …

We review one of the most versatile theoretical approaches to the study of time-dependent
correlated quantum transport in nano-systems: the non-equilibrium Green's function (NEGF) …